automake: Convert src/mesa/drivers/x11/Makefile to automake.

The weird versioning of the libGL where the package version was sort
of expressed as a big integer is dropped.  libtool didn't like the 0
prefix, and it didn't really make sense anyway -- if you interpret it
as an integer version number, old Mesa 071200 was bigger than current
Mesa 08100.  Instead, just bump the minor version and drop the
patchlevel.
5 files changed