* fcl-db: tdbf: better support ftWord field type
* fcl-db tests: test ftWord for bufdataset, tdbf etc
To do: verify why all bufdataset export tests now get an access violation

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24545 3ad0048d-3df7-0310-abae-a5850022a9f2