gl_API.xml 1.63 corrects some problems with GLX protocol for
GL_EXT_paletted_texture and GL_SGI_color_table. Regenerate from that
file, and enable those extensions and GL_EXT_shared_texture_palette.
Port all changes from the (monolithic) accelerated_indirect-0-0-1 branch to
the modular trunk. This will break the Darwin and cygwin builds. Other
than the changes to symlink-mesa.sh and the various Makefile.am files,
to code is identical to what's in the branch.
Reviewed by: airlied, krh
