[Mesa-stable] 5 patches for 10.2

[Jordan Justen]

I forgot to CC these to mesa-stable.

Can I cherry-pick -x them to 10.2?

c51c192 i965/gen8: Set depth extent field
294ada2 i965/gen8 depth: Set depth size based on LOD0 for 3D textures
e6d6ed5 i965/gen7 depth: Set depth size based on LOD0 for 3D textures
e47d08a i965/gen8 renderbuffer: Set depth size based on LOD0 for 3D textures
b875f39 i965/gen7 renderbuffer: Set depth size based on LOD0 for 3D textures

-Jordan