vmwgfx hardware enablement patch

[Jakob Bornecrantz]

Hello all,

This squashed patch series implements "guest backed surfaces" in the
VMware vmwgfx kernel driver. It is used along with changes in the
mesa source tree (which you guys have already have to my knowledge
picked up since it was in the 10.1 mesa release). We would like
to have this included in the trusty release, please.

The patch is backported from the 3.14 kernel and is rather large,
but mostly only touches the vmwgfx driver and some minor touches
on the generic ttm code. You can get it from here:

git://people.freedesktop.org/~wallbraker/linux for-unbuntu-vmwgfx

Comments please?

Cheers, Jakob.

PS: I'm sorry I don't know which tags to put in the subject,
    so I just left it as it