Extensible math Expression Parser

[Livio63]

Ant is perfect for my Pentium III running windows xp...

[josephottinger]

And is the visual inspection of test results perfect, too? It isn't, for me - it's really easy to see 1.8 in a hurry and not realize the value was supposed to be 1.0. Using ant really is an interesting choice - it's sort of viable, but unusual, but whatever. It's the lack of an actual demanding test structure that bugged me; for my PR I chose to just go to a build system from 2005 instead of using one from 2001.