grafx - Extensible Java Graphics Package Code

Adding audio-pausing capability to Blockout level test, plain vanilla.

Adding audio pausing capability to the Tetris modules.

Implementing pause/resume for the rest of the audio clips in
TetrisPlaybackCanvas.

In TetrisPlayback, adding capability for pausing the StatsUpdater audio.

Adding comment for 'Esc' key.

Adding pauseAudio() and resumeAudio() to StatsUpdater.

Testing the pause() and resume() of audio clips in computer player. It works.
But the threading safety is still very sub-par.

Implemented a very bad version of pause() and resume() in audio clips. I want
to test this superficially until it works in some cases, then I want to create
an audio subsystem with dispatch thread. The code right now is horrible with
respect to thread safety, it's really not up to my standards at all.

Using a 32 bit quantity for m_pausedTimeMillis, renaming to m_pausedOffMillis.

Starting to implement pause() and resume() in audio clips. This is going to be
very tricky.