Missing sockets unit

git-svn-id: http://svn.freepascal.org/svn/fpc/branches/aros@28435 3ad0048d-3df7-0310-abae-a5850022a9f2
Missing mesalib unit

git-svn-id: http://svn.freepascal.org/svn/fpc/branches/aros@28436 3ad0048d-3df7-0310-abae-a5850022a9f2