* Use fpmkunit to obtain gcclib-dir for configuration files

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24753 3ad0048d-3df7-0310-abae-a5850022a9f2
 * Fixed uninitialized variable problem
 * Removed double -Fl prefix

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24754 3ad0048d-3df7-0310-abae-a5850022a9f2