rails4: Revert session store support

This pull request reverts commit 43c844861c452fffacf5e061e830f714ad73c17d because ` activerecord-session_store` gem has been split from ActiveRecord itself.

Without this revert, `rake spec` got the name error.

```ruby

$ rake spec
/home/yahonda/.rvm/rubies/ruby-1.9.3-p194/bin/ruby -S rspec ./spec/active_record/connection_adapters/oracle_enhanced_cpk_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_procedures_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_structure_dump_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_schema_dump_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_schema_statements_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_connection_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_dirty_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_data_types_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_context_index_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_emulate_oracle_adapter_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_core_ext_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_dbms_output_spec.rb
==> Running specs with MRI version 1.9.3
==> Running specs with Rails version 4.0-master
/home/yahonda/git/oracle-enhanced/lib/active_record/connection_adapters/oracle_enhanced_session_store.rb:47:in `<top (required)>': uninitialized constant ActiveRecord::SessionStore (NameError)
	from /home/yahonda/git/oracle-enhanced/lib/active_record/connection_adapters/oracle_enhanced_adapter.rb:1383:in `<top (required)>'
	from /home/yahonda/git/oracle-enhanced/spec/spec_helper.rb:32:in `require'
	from /home/yahonda/git/oracle-enhanced/spec/spec_helper.rb:32:in `<top (required)>'
	from /home/yahonda/git/oracle-enhanced/spec/active_record/connection_adapters/oracle_enhanced_cpk_spec.rb:1:in `require'
	from /home/yahonda/git/oracle-enhanced/spec/active_record/connection_adapters/oracle_enhanced_cpk_spec.rb:1:in `<top (required)>'
	from /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/configuration.rb:780:in `load'
	from /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/configuration.rb:780:in `block in load_spec_files'
	from /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/configuration.rb:780:in `map'
	from /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/configuration.rb:780:in `load_spec_files'
	from /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:22:in `run'
	from /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:69:in `run'
	from /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:8:in `block in autorun'
rake aborted!
/home/yahonda/.rvm/rubies/ruby-1.9.3-p194/bin/ruby -S rspec ./spec/active_record/connection_adapters/oracle_enhanced_cpk_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_procedures_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_structure_dump_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_schema_dump_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_schema_statements_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_connection_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_dirty_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_data_types_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_context_index_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_emulate_oracle_adapter_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_core_ext_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_dbms_output_spec.rb failed

Tasks: TOP => spec
(See full trace by running task with --trace)
```

Even after commit 43c844861c452fffacf5e061e830f714ad73c17d reverted, following session store related tests get failed.  

```ruby
$ rake spec      /home/yahonda/.rvm/rubies/ruby-1.9.3-p194/bin/ruby -S rspec ./spec/active_record/connection_adapters/oracle_enhanced_cpk_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_procedures_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_structure_dump_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_schema_dump_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_schema_statements_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_connection_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_dirty_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_data_types_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_context_index_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_emulate_oracle_adapter_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_core_ext_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_dbms_output_spec.rb
==> Running specs with MRI version 1.9.3
==> Running specs with Rails version 4.0-master
...............................................................................................................................[DEPRECATION] virtual column `:default` option is deprecated.  Please use `:as` instead.
.....................................................................................................................................................................FFFFF
An error occurred in an after(:all) hook.
  NoMethodError: undefined method `execute' for nil:NilClass
  occurred at /home/yahonda/git/oracle-enhanced/spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb:71:in `block (3 levels) in <top (required)>'

.....................................................

Failures:

  1) OracleEnhancedAdapter database session store should create sessions table
     Failure/Error: @session_class = ActiveRecord::SessionStore::Session
     NameError:
       uninitialized constant ActiveRecord::SessionStore
     # ./spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb:64:in `block (3 levels) in <top (required)>'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:23:in `instance_eval'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:23:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:106:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:424:in `run_hook'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:312:in `run_before_all_hooks'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:359:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `block in run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `map'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `block (2 levels) in run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `map'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `block in run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/reporter.rb:34:in `report'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:25:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:69:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:8:in `block in autorun'

  2) OracleEnhancedAdapter database session store should save session data
     Failure/Error: @session_class = ActiveRecord::SessionStore::Session
     NameError:
       uninitialized constant ActiveRecord::SessionStore
     # ./spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb:64:in `block (3 levels) in <top (required)>'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:23:in `instance_eval'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:23:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:106:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:424:in `run_hook'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:312:in `run_before_all_hooks'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:359:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `block in run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `map'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `block (2 levels) in run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `map'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `block in run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/reporter.rb:34:in `report'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:25:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:69:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:8:in `block in autorun'

  3) OracleEnhancedAdapter database session store should change session data when partial updates enabled
     Failure/Error: @session_class = ActiveRecord::SessionStore::Session
     NameError:
       uninitialized constant ActiveRecord::SessionStore
     # ./spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb:64:in `block (3 levels) in <top (required)>'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:23:in `instance_eval'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:23:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:106:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:424:in `run_hook'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:312:in `run_before_all_hooks'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:359:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `block in run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `map'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `block (2 levels) in run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `map'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `block in run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/reporter.rb:34:in `report'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:25:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:69:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:8:in `block in autorun'

  4) OracleEnhancedAdapter database session store should have one enhanced_write_lobs callback
     Failure/Error: @session_class = ActiveRecord::SessionStore::Session
     NameError:
       uninitialized constant ActiveRecord::SessionStore
     # ./spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb:64:in `block (3 levels) in <top (required)>'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:23:in `instance_eval'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:23:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:106:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:424:in `run_hook'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:312:in `run_before_all_hooks'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:359:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `block in run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `map'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `block (2 levels) in run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `map'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `block in run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/reporter.rb:34:in `report'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:25:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:69:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:8:in `block in autorun'

  5) OracleEnhancedAdapter database session store should not set sessions table session_id column type as integer if emulate_integers_by_column_name is true
     Failure/Error: @session_class = ActiveRecord::SessionStore::Session
     NameError:
       uninitialized constant ActiveRecord::SessionStore
     # ./spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb:64:in `block (3 levels) in <top (required)>'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:23:in `instance_eval'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:23:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:106:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/hooks.rb:424:in `run_hook'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:312:in `run_before_all_hooks'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:359:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `block in run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `map'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `block (2 levels) in run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `map'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `block in run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/reporter.rb:34:in `report'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:25:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:69:in `run'
     # /home/yahonda/.rvm/gems/ruby-1.9.3-p194@railsmaster/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:8:in `block in autorun'

Finished in 52.76 seconds
350 examples, 5 failures

Failed examples:

rspec ./spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb:75 # OracleEnhancedAdapter database session store should create sessions table
rspec ./spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb:79 # OracleEnhancedAdapter database session store should save session data
rspec ./spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb:86 # OracleEnhancedAdapter database session store should change session data when partial updates enabled
rspec ./spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb:100 # OracleEnhancedAdapter database session store should have one enhanced_write_lobs callback
rspec ./spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb:105 # OracleEnhancedAdapter database session store should not set sessions table session_id column type as integer if emulate_integers_by_column_name is true
rake aborted!
/home/yahonda/.rvm/rubies/ruby-1.9.3-p194/bin/ruby -S rspec ./spec/active_record/connection_adapters/oracle_enhanced_cpk_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_procedures_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_structure_dump_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_schema_dump_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_schema_statements_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_connection_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_dirty_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_data_types_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_context_index_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_emulate_oracle_adapter_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_core_ext_spec.rb ./spec/active_record/connection_adapters/oracle_enhanced_dbms_output_spec.rb failed

Tasks: TOP => spec
(See full trace by running task with --trace)
$
```

I've been thinking the way how to work Oracle enhanced adapter and activerecord-session_store
without adding dependencies with ActiveRecord itself, but no good way found.