fcl-db: dbase: rename new TLargeIntegerConstant to TLargeIntConstant to align naming with existing identifiers like etLargeInt and TLargeIntVariable

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25791 3ad0048d-3df7-0310-abae-a5850022a9f2