fcl-db/dbase:
* fix TestRecNo test
* dbtestframework: ignore currency test as tdbf uses bcd fields
* fix writing $1A EOF marker at end of dbf file
* fix: FoxPro does not allow null fields

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24187 3ad0048d-3df7-0310-abae-a5850022a9f2