[arch-general] What about gallium on r600?

[Sergej Pupykin]

Hi,

it works not worse than classic mesa on my RV620.

I add --enable-gallium-r600 and modify package_ati-dri-git() in mesa-git 
PKGBUILD as it is already done for r300

(make -C ${srcdir}/build/src/gallium/targets/dri-r600 
DESTDIR="${pkgdir}" install)

I test current (20101213) git snapshot.

May be put it into testing and enable on next release?