Added poly and numeric modules
Cleanup of poly an numeric modules

Removed some test code
Fixed a mixed bag of stuff poly and numeric
Optimized divMod in poly

Made a huge speed improvement in debug mode. Only a few % in release,
but the memory load should be somewhat lower.
Optimized integrate function in module poly

Rewrote the integrate function since the old one was quite hacky. The
new one is about 7 times faster in release and 3 times faster in debug
Fixed some minor stuff in module poly

Removed the stupid initPolyFromDegree which only served ro re-allocate
results. Also fixed some minor stuff with nil return values in roots.
Merge pull request #504 from ventor3000/master

modules poly and numeric added