* run EMX linker quietly

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@29000 3ad0048d-3df7-0310-abae-a5850022a9f2
  * make LastOSError accessible earlier

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@29001 3ad0048d-3df7-0310-abae-a5850022a9f2