Message 259702 - Python tracker

Attached is the new version of fastint5 patch.  I fixed most of the review comments.  I also optimized %, << and >> operators.  I didn't optimize other operators because they are less common.  I guess we have to draw a line somwhere...

Victor, thanks a lot for your suggestion to drop NB_SLOT etc macros!  Without them the code is even simpler.