grafx - Extensible Java Graphics Package Code

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.

Adding comments to ModernAudioClip.java. Getting ready to implement pause()
and resume(). It will be difficult.

Getting rid of most cases of java.applet.AudioClip usage. Moving the new audio
framework into package com.nerius.audio. This is a minor change which touches
many files.

Adding class com.nerius.game.newaudio.AudioClip. It's an interface.

Renaming m_lastPlay -> m_lastPlayMillis, timeNow -> timeNowMillis,
m_lastLoop -> m_lastLoopMillis in ModernAudioClip.

Renaming m_constrTime -> m_constrTimeMillis,
m_startedOff -> m_startedOffMillis. Adding m_clipLenMicros.

Implemented CommandLineArgs.queryFlagWithArg() but it's untested.

Skipping watermark by default in video generation.