- name platform 'sqlsrv' nonexistent and E_NOTICE index array.

Added regression test for the Portability Wrapper when setting the defaultFetchMode on the Connection instead of the Statement

This enables a more natural way of interacting with result sets,
and re-introduces in Doctrine DBAL a feature that has been available
in PDO from the begining.

[DBAL-56] Add portability wrapping layer porting MDB2 functionality to fix case, rtrim strings and convert empty strings to null.