Removed the pre-Carbon Mac OS 9 audio code, so Mac OS 8 is officially unsupported now. :) The "USE_RYANS_SOUNDCODE" portion, which is what remains, has been the active codepath for years now without complaint, and was used in several shipping OS X titles before the CoreAudio support obsoleted it, so it's a good fallback to keep around for testing if nothing else. This code should still work on both OS 9, and PowerPC/Intel Mac OS X.

The reason these libraries are built outside of the standard XFree86
tree is so that they can be linked as shared object code directly into
SDL without causing any symbol collisions with code in the application.

You can't link static library code into shared libraries on non-x86
Linux platforms.  Since these libraries haven't become standard yet,
we'll just include them directly.

These sources are synchronized with XFree86 4.2.1