* Reworked i386 division by constant optimization to reuse code from powerpc64. The algorithm is slightly different, signed version is one instruction shorter, unsigned one is one instruction longer (typically). The new algorithm is easily scalable for x86_64 target, unlike the old one.

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@27884 3ad0048d-3df7-0310-abae-a5850022a9f2