[Mesa-stable] Extra nominations, authored by Julien

[Emil Velikov]

Some nominations missing the mesa-stable tag

Three st/va and nouveau patches can will be nice to have for stable.
Props to Julien.

commit a61be1a79897931e3efb5b9119c48e1fb1257db4
Author: Julien Isorce <j.isorce at samsung.com>
Date:   Fri Oct 23 13:25:47 2015 +0100

   st/va: pass picture desc to begin and decode

commit 3bbb8715acd1cb85ea7aa7763c06cd12347a1a9a
Author: Julien Isorce <j.isorce at samsung.com>
Date:   Tue Oct 20 17:34:23 2015 +0100

   nvc0: fix crash when nv50_miptree_from_handle fails

commit d42029d2d9bc6b65ccf847dc9ba2e70b496d0299
Author: Julien Isorce <j.isorce at samsung.com>
Date:   Fri Oct 30 11:42:45 2015 +0000

   st/va: do not destroy old buffer when new one failed

commit 5e763aaa21654d0591b7da14c573fc03d4a60205
Author: Julien Isorce <j.isorce at samsung.com>
Date:   Fri Oct 30 11:42:51 2015 +0000

   st/va: add more errors checks in vlVaBufferSetNumElements and vlVaMapBuffer


-Emil