grafx - Extensible Java Graphics Package Code

Reducing FF for COARSE_MESH, was 5, is now 3. It looks smooth.

Implemented FINE_WIREFRAME.

Adding LineRotate2D test code.

Taking out the line drawing color interpolation for vertex normals.

Adding, adjusting comments. This is comments only. But I thought of another
way to do the cast operations, commented on it.

Changing very minor comments, indentations; getting ready for more big changes
though.

Employing the newer strategy with m_foff in 3D graphics line drawing,
interpolated colors. The integer coordinates remain in original space.

Adding some simple comments.

Employing a slightly different strategy in constant color 3D line drawing
algorithm. I discovered this with the 2D code.

Removing some confusing and unnecessary explicit cast, because the cast is
implicit.