DRI, BSD, and Linux

My hope is that this process change will actually make things a bit
easier for the BSD guys. Our old process was something of a "dogpile on
DRM master and sort things out later" approach. This meant that the BSD
guys were always playing catch up, so they had to either fork & update
periodically (like we did for Linux) or use the DRM code directly (what
Robert chose to do for FreeBSD). With the new process, we'll have a much
more disciplined approach to contributions: they'll be posted to the
mailing list and discussed prior to commit, which means everyone,
including the BSD developers, will have a chance to comment and ask for
changes before things are pushed upstream where they might break things.

I suspect Robert will want to change his development model anyway, since
forking + stabilizing with periodic updates would probably improve
stability & keep untested features out of releases, but even if he
chooses not to I think his life *should* be easier going forward (though
I have yet to convince him of this :).

Those interested in some of the background on this change can check out
the thread titled "[PATCH 1/1] Adapt on_each_cpu" in their favorite
dri-devel@lists.sf.net archive.