RFC: Change OML_sync_control UST to CLOCK_MONOTONIC

[Joakim Plate]

Michel Dänzer <michel <at> daenzer.net> writes:

> > >
> > >  From the GLX_OML_sync_control spec:
> > >
> > >          The Unadjusted System Time (or UST) is a 64-bit monotonically
> > >          increasing counter [...]
> > >