Cleaned up the fcdb directory.
Separted framework independent unit test files from the MUnit test drivers.
Added unit tests for FourDivergence, MomentumCombine and Uncontract.
Restored standard behavior of MomentumCombine without affecting Rolf's
speed optimizations.
Refactored MomentumCombine.
Removed trailing whitespaces everywhere in the code.
Merged the content of NonCommutative.m into CoreObjects.m.
Fixed a bug when Mathematica 10 tries to load the
unpatched version of FeynArts.