amunits/morphunits: make intuition/EndRefresh() to accept a LongBool as second argument instead of longint. arosunits already defines it as LongBool.

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@29327 3ad0048d-3df7-0310-abae-a5850022a9f2