[CMake] 64bit installations, new X11 release

[Brad King]

Alexander Neundorf wrote:
> 1) there are several linux distributions coming with 64bit support now. 
> AFAIK on these systems the directories /lib64, /usr/lib64 
> and /usr/local/lib64 exist additionally to the normal /lib, /usr/lib 
> and /usr/local/lib directories. Is this already handled by cmake ? (AFAIK 
> not). What should be done to handle this ? 

This is already handled.  The cmMakefile::FindLibrary method will take 
any directory in the search path that ends in /lib and add a copy that 
ends in /lib64 automatically.

> 2) there has been a X11R7.0 released. 
> What has changed with this release ? Are there more changes than the 
> renaming of /usr/X11R6 to /usr/X11R7 ? 

Someone with a system that has X11R7 installed will have to tell us how 
to support this.

-Brad