grafx - Extensible Java Graphics Package Code

Making some simplifications in line drawer.

Changing the order of some operations. The code was examined closely and it
was determined that this has no impact on the algorithm.

Fleshing out more of the line drawing.

Changing order of some operations, after careful examination this should not
have any impact on algorithm correctness.

Fleshing out more of drawLine().

Setting m_lineClip in setClip().

Getting the ball rolling on drawLine().

Implemented the line clipper.

Reducing sizes of arrays to not have duplicates.

Back face culling on DRAW_VERTICES. Little by little.