FindXKB.cmake proposed patch

[Alexander Neundorf]

On Tuesday 24 June 2008, Fabrice Ménard wrote:
> Hi,
>
> Helping check_library_exists to find XkbLockModifiers in libX11.
>
> Best regards,

Hmm, this whole file looks strange.
At least it should have some documentation at the top.
And it needs a find_package(X11) before it uses X11_LIBRARIES and 
X11_LIBRARY_DIR. 
Actually I think this should be integrated into FindX11.cmake.

Alex