* file locking API call updated according to changes in unit doscall2

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@29018 3ad0048d-3df7-0310-abae-a5850022a9f2
  * avoid warning about dependency of stdconvs on convutils on 8.3 targets

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@29019 3ad0048d-3df7-0310-abae-a5850022a9f2