Upgrade to X.Org 6.9.0 release.
Remove separate mtree file for X_WINDOW_SYSTEM=XOrg case. Both X11
distributions now use the one from /etc/mtree again.
Update to a newer snapshot of stable Mesa. Includes a fix for hangs with
RV200 Radeons (thanks Dave Airlie!) [1], fixes for software fallbacks, the usual
pile of little conformance and other bugfixes, and fixing the hang on first lock
grab on AMD64 (that was a really lame bug). Host the distfile on freefall as
well until public_distfiles propagates.
PR: [1] ports/75731
Submitted by: [1] pb