grafx - Extensible Java Graphics Package Code

I think I fixed a bug. I don't know how correct this is. Still testing. This
code is so complex that it seems to make my head turn upside down; I wonder
about the secrets of the Universe as I work on this code. It's so awe-
inspiring that I think I have to make a video explaining it.

Encountered a bit of a bug; working on it. Try to reduce "-xy-y".

Making a little bit of progress on simplifyCompositeRotation().

Have something to test in simpifyCompositeRotation().

Starting work on the s_rotRed Hashtable.

Fixing mistake in comments.

More comments for the rotation compositions.

Reducing composite rotation rules further.

Added some more rotational composite theorems.

Making progress on explanation of how to simplify composite rotations.