doctrine/dbal — pull request #475 by deeky666 (2013-12-28 19:36:56+00:00)
Title: Fix column default value introspection in Oracle

A bug in `OracleSchemaManager` cause a column's default value always to be null. Besides that default values are enclosed in single quotes when retrieved from database which is not evaluated by the schema manager, either.
This PR also fixes the default value tests in Oracle's functional test suite.