Log Message:
Changes 6.2.1:
Bug fixes:
- don't apply regular fog or color sum when using a fragment program
- glProgramEnvParameter4fARB always generated an error on
  GL_FRAGMENT_PROGRAM_ARB (fdo bug 1645)
- glVertexAttrib3svNV and glVertexAttrib3svARB were broken
- fixed width/height mix-up in glSeparableFilter2D()
- fixed regression in glCopyPixels + convolution
- glReadPixels from a clipped front color buffer didn't always work
- glTexImage didn't accept GL_RED/GREEN/BLUE as the format
- Attempting queries/accesses of VBO 0 weren't detected as errors
- paletted textures failed if the palette had fewer that 256 entries
Changes:
- fixed a bunch of compiler warnings found with gcc 3.4
- bug reports should to go bugzilla.freedesktop.org