been 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. Too bad
    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.