1. updated makefiles to build libOSMesa as well as libGL
these are improvements to fbdev-glut
1. mouse cursor will timeout and be invisible if not being used
2. do not restore colormaps to truecolor targets, this causes problems at
exit on my g450
3. fixed a crash when cleaning up from failure by munmaping what had not
yet been mmaped
4. Resize event handling is improved, the resize function is not invoked
from a signal handler now.
5. The main loop can detect if it is running very fast (greater than 2khz)
6. keyboard up and special up events are generated from stdin input mode
and if it is also not redrawing, it sleeps
7. corrections in escape sequences for function keys for stdin input
Added gamemode stubs, iconify support, joystick stubs.
Fixed color index mode, added 8 bit alpha blending, enabled cmaps even
with 15, 16, 24, and 32 depths as some fbdev drivers need this.
Fixed compiling with -ansi
Using SIGIO for keyboard input, so that vt switching is enabled even
if the program is locked.
Fixed numerous small bugs.
