Merge pull request #1 from durnoyabsurd/master

Added reraise of original exception instead of NotImplementedError in columns_without_cahce_with_pipelined when package name is empty
Fix bug with shared relations (default scopes for example)
Compatibility with AR 3.2.12

* Oracle adapter patch modified to work with function name in calling syntax
  (e.g. TABLE(MY_PACKAGE.MY_FUNCTION(:my_var)) => MY_PACKAGE.MY_FUNCTION)
Updated ruby-plsql dependency
Added exception raising for missing plsql procedures in procedure method creation.

* Added argument error raising for procedure method creation, when used plsql procedure not found.
Merge pull request #2 from kma617/hoper1225

Added exception raising for missing plsql procedures in procedure method...
Added superclass for named exception class
Fix usage of dup in ProcedureMethods#get_procedure_arguments
Added handling of ORA-06512
Fixed ORA-06512 handling and added array of exceptions support
Moved engine file, added pry to Gemfile
Added reraise of Oracle application exceptions