Fix various problems with the timer code. * SDL_timer_running wasn't always updated correctly. * Fixed occasional crash in SDL_SetTimer() when clearing threaded timers * It was possible to get both the timer thread and event thread running * Other misc. cleanup

Makefile.in
Makefile
.libs
*.o
*.lo
*.la
SDL_systhread.c
SDL_systhread_c.h
SDL_syssem.c
SDL_syssem_c.h
SDL_sysmutex.c
SDL_sysmutex_c.h
SDL_syscond.c
SDL_syscond_c.h
clone.S