Need two commits cherry-picked from Mesa main into 16.04

[Sinclair Yeh]

Hi,

On Ubuntu 16.04, VMWare customers are running into a couple of issues:
 1. Any app that uses glGenMipmap command will not work properly or crash
     (https://communities.vmware.com/thread/537924)
 2. vmwgfx_dri.so is sending provoking vertex command when it is not supposed to.

I have contacted the Mesa maintainer, but unfortunately 11.2.x is no longer being actively supported, and so I couldn't get the fixes cherry-picked over.

Is there an internal process in Canonical to cherry-pick fixes over?

To fix the two defects above, please cherry pick the following two commits from Mesa main:
  7988513ac3d86ba367fbe44e73fe483ff96aaa29
  ca531aeeb120cdd

-----------------------

1) Description: Ubuntu 16.04.1 LTS
    Release: 16.04
2) libgl1-mesa-dri:
    Installed: 11.2.0-1ubuntu2.2
    Candidate: 11.2.0-1ubuntu2.2
    Version table:
    *** 11.2.0-1ubuntu2.2 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     11.2.0-1ubuntu2 500
        500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages

3) Google Earth will run into the glGenMipmap issue, i.e. dmesg will show "Unsupported command" I'm not sure if the 2nd issue is observable without a debug build of VMWare software...

4) Through internal testing, the two commits above should the issues mentioned.

[Timo Aaltonen (tjaalton)]

affects only xenial

[Timo Aaltonen (tjaalton)]

ca531aeeb120cdd should have been sent to be included in 12.0.6, the other one is there and xenial now has 12.0.6

[Timo Aaltonen (tjaalton)]

17.0.x will be backported to xenial