Thanks for the patch, it works fine. In case somebody wants to test binaries, you can get it from http://www.cihar.com/xfree86/ (probably only http://www.cihar.com/xfree86/xlibmesa-gl_4.3.0-2.1_i386.deb is needed, but I'm too lazy to check it more deeply :-).
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Regards
Michal Čihař
http://cihar.com
