Enabled tests for MS SQL Server.

Used sqsh, activerecord-sqlserver-adapter and SQL Sever 2008 R2 Express to
run the tests. I'm sure there's a better solution for the changes at test/test_find.rb. :)
Merge pull request #112 from codeodor/master

Fixes problem with deleting non-CPK in Rails 3.2.5 (perhaps prior versions too)
fix typos in rake tasks names in README_tests.rdoc
bringing establish_connection override up to date with rails 3.2.6
Merge pull request #115 from isc/master

update in establish_connection override to fix issue #114
Merge pull request #113 from enderson/sqlserver

Enabled tests for MS SQL Server.
Update to version 5.0.8
handle loading of cpk for jdbcpostgresql adapter
Merge pull request #117 from troycald/master

Fixed problem loading jdbcpostgresql adapter
Make cpk_in_predicate build a simple IN when possible

If there is only a single key element then build an IN predicate
instead of a long list of equality comparisons joined together.
Merge pull request #118 from tomhughes/master

Make cpk_in_predicate build a simple IN when possible
Require postgresql_adapter.rb also when using activerecord-postgis-adapter
Update ActiveRecord::Base#initialize_dup override in line with ActiveRecord::Base 3.2.5+

initialize_attributes is included from ActiveRecord::AttributeMethods::Serialization and since 3.2.5 accepts
an options hash which can control whether or not the attributes are initialized serialized or unserialized.
Merge pull request #120 from torsti/master

Load postgresql_adapter.rb with postgis-adapter
Merge pull request #123 from C3/unserialized_value

Update ActiveRecord::Base#initialize_dup override in line with ActiveRec...
Update version and dependencies.
Fix up recreating postgresql database.
Formatting changes.
Add support for counter cache.
Update history for 5.0.9 release.