Fix build errors

Set paths so that CMake will find libraries installed in /opt/hawaii.
New mesa package

Build mesa 9.0 from git, hopefully it doesn't have the llvm assert
problems.

See https://bugs.freedesktop.org/show_bug.cgi?id=61364 and
http://llvm.org/bugs/show_bug.cgi?id=15410
Fetch latest qupzilla version from git