12-22-2001, for source release under GPL licensing:
- Tweaked linux/Makefile for easier build
  added linux/README-3.21-RELEASE

3.21 Changes:
- Support for GL_ARB_multitexture added.  This supports the new multitexture
  extensions and deprecates GL_SGIS_multitexture.
- Linux OpenGL X11 handling completely rewritten.  Support for XF86DGA Mouse
  and fullscreen resolution support added.  Please see the README file for
  Linux about the new features of this handling.