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 GGI video driver

noinst_LTLIBRARIES = libvideo_ggi.la
libvideo_ggi_la_SOURCES = $(GGI_SRCS)
libvideo_ggi_la_LIBADD = -lggi -lgii -lgg

# The SDL GGI video driver sources
GGI_SRCS = 			\
	SDL_ggikeys.h		\
	SDL_ggivideo.h		\
	SDL_ggievents.c		\
	SDL_ggimouse.c		\
	SDL_ggivideo.c		\
	SDL_ggievents_c.h	\
       	SDL_ggimouse_c.h