+ handle constint+pointerconst in taddnode.simplify



git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@27491 3ad0048d-3df7-0310-abae-a5850022a9f2
* Added DegNormalize

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@27492 3ad0048d-3df7-0310-abae-a5850022a9f2