* Function tjvmaddnode.cmpnode2topcmp is, in fact, not specific to any target. Moved it to generic tcgaddnode and reused in tmipsaddnode, where the same functionality was implemented in different way.

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@26151 3ad0048d-3df7-0310-abae-a5850022a9f2