(cherry picked from commit 69931faa)

- Fixed docblocks
- Removed return statements on void methods
- Cleaned up unused private / local variables
- Fixed license issues
- Removed SVN leftovers
- Fixed doctrine-project.org links
- Added line breaks before return statements

This will only happen when adding primary keys via ALTER TABLE

SQL Server doesn't like the quoted alias for doctrine_rownum and fails when setting setMaxResults() and setFirstResult() in query, returning an error like "Conversion failed when converting the varchar value 'doctrine_rownum' to data type int. (severity 16)"