[gutsy] DRI interrupts busted on 965gm (+fix)

(Packages affected are kernel and mesa source (intel DRI))

3D apps such as Google Earth that request VBL sync'ed operations fail miserably on 965gm based
machines due to an interrupt issue. This has been fixed via 2 patches, one to the kernel intel DRM
module and one to the Mesa side intel DRI driver, available at:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e4a7b1d1d90d202a030688ab5b177c3c0f15ee3e

and

http://gitweb.freedesktop.org/?p=mesa/mesa.git;a=commitdiff;h=b3fc9a1585f390274fa26b3e3f80bc6d16f4388a