Added Default SystemMethods.CurrentDateTime for Oracle Backend Generator (maps to oracle keyword CURRENT_TIMESTAMP)

http://docs.oracle.com/cd/B28359_01/server.111/b28286/functions038.htm#SQLRF00629
Added SchemaName to Create, Insert and Delete Table operations for Oracle generator backend
changed oracle tests to correctly check custom schema in Create, Insert, Delete
edge case for "IsQuoted" method in Generators/Generic/GenericQuoter.cs:
method IsQuoted if parameter passed is null or empty returns false (because it is not quoted...)
Fixed Insert tests from OracleDataTests.cs
changed encoding to UTF-8 without signature
Oracle Managed Data Access

Introducing new processor (derived from Oracle processor) to handle
Oracle's .NET 4+ managed client connector.
Fixed the build

Target framework incompatibility between different projects in solution.
Refactoring

Moved Oracle managed processor files in the Oracle processor directory.
Unit tests
Fixed Oracle unit tests concerning case sensitiveness (columns, constraints and indexes names)
Merge pull request #480 from usarskyy/master

  changed encoding to UTF-8 without signature
Merge pull request #493 from cjundt/master

  Fixed Oracle unit tests concerning case sensitiveness (columns, constraints and indexes names)
  Unit tests
  Refactoring
  Fixed the build
  Oracle Managed Data Access

Conflicts:
	src/SolutionInfo.cs
Merge pull request #478 from kidFashion/master

  Fixed Insert tests from OracleDataTests.cs
  edge case for "IsQuoted" method in Generators/Generic/GenericQuoter.cs: method IsQuoted if parameter passed is null or empty returns false (because it is not quoted...)
  changed oracle tests to correctly check custom schema in Create, Insert, Delete
  Added SchemaName to Create, Insert and Delete Table operations for Oracle generator backend
  Added Default SystemMethods.CurrentDateTime for Oracle Backend Generator (maps to oracle keyword CURRENT_TIMESTAMP)