Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe if SDL is built with a non-cdecl calling convention, and it's just generally bad practice anyhow. Now programs explicitly call SDL_Quit() where appropriate, wrap SDL_Quit() in a cdecl function where it can't be avoided, and rely on the parachute where a crash might have hit the atexit() before (these ARE test programs, after all!).

## Makefile.am for SDL using the Mac OS X CoreAudio driver

noinst_LTLIBRARIES = libaudio_macosx.la
libaudio_macosx_la_SOURCES = $(SRCS)

# The SDL audio driver sources
SRCS =	SDL_coreaudio.c	\
	SDL_coreaudio.h