fcl-db: memds:
- add support for ftWord, ftFmtBCD field types
- fix memds for failed tests TestRequired (add call to inherited InternalPost), TestRecNo
- fix testing environment for memds

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25846 3ad0048d-3df7-0310-abae-a5850022a9f2