grafx - Extensible Java Graphics Package Code

Simplifying a section of the code a little bit by not defining a temporary
local variable.

Correcting the choice of composite rotation in case of a ROT_* post-drop slide
movement. I caught this by just reading the code. Didn't even see it happen.
Caught the mistake before I could see it happen.

This game can be studied.

qSearchBreadth change from 64 to 24.
This is probably temporary.

Adding ROT_X and ROT_Y post-drop slide possibilities.

Adding the rotateNegX() and rotateNegY() public methods, which rotate a Block.

Modifying VID_FPS (setting it to 100.0) and modifying FRAMES_PAST_EOF.

Modifying location and opacity of text in watermark, slightly.

Taking a first stab at script modification which adds copyright watermark to
videos that are created. Untested.

Changing pix_fmt to the one that isn't deprecated and which still works in most
browsers.