[ut2004] Can't run client in linux

[Gian Paolo Mureddu]

You just should have links in your /usr/X11R6/lib directory, one lib at 
that libGL.so.1.2 and its symlinks (libGL.so.1). Do you have any libGLs 
under the directory /usr/X11R6/lib/tls? If so, try renaming them.