Reverted darwin/bundle/**/Credits.rtf to XFree86 versions to avoid
future conflicts on ASCII but not humal readable files. (There should
probably be separate CreditsXorg.rtf files) (Egbert Eich).
decided that the priority is to preserve the server's internal API/ABI
so that third-party drivers that depend on symbols like
noPanoramiXExtension, etc., would not need to be recompiled. Toobad gcc
on Linux doesn't support ELF's weak symbols as that would have been a
reasonable solution for preserving the ABI. N.B.: While symbols, i.e.
functions and variables revert to the old name, I did not revert build
names, i.e. -DXINERAMA, to the old -DPANORAMIX. There was no need, and
it's just a build issue that has no impact on the binary output of the
build.