fcl-db: odbc: increase max. allowed string field length. Fix for existing tests TTestFieldTypes.TestStringLargerThen8192 and TestInsertLargeStrFields. (similar like rev.23141, 23198)


git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24389 3ad0048d-3df7-0310-abae-a5850022a9f2