Merge pull request #74 from mono/master

Various Maintenance Issues
#73 fixed misnamed fps_images.
Merge branch 'master' of https://github.com/totallyevil/cocos2d-xna
renaming ccMacros.FLT_EPSILON to float.Epsilon
Merge pull request #75 from mono/master

Hack for Labels not showing up on MonoMac and MouseVisible fix