Enforce error resilient mode on in temporal svc real-time mode

This commit makes the codec automatically turn on error resilient
mode when using real-time mode for temporal scalable coding. It
fixes an enc/dec mismatch issue and re-enables the corresponding
unit test.

Change-Id: Ie1f7134e9a78ddd43e9b1555b3ee991c8a3afd0d
Added high bitdepth sse2 transform functions

Also removes some spurious changes in common/vp9_blockd.h which
was introduced by a rebase issue between nextgen and master branches.

Change-Id: If359f0e9a71bca9c2ba685a87a355873536bb282
(cherry picked from commit 005d80cd05269a299cd2f7ddbc3d4d8b791aebba)
(cherry picked from commit 08d2f548007fd8d6fd41da8ef7fdb488b6485af3)
(cherry picked from commit 4230c2306c194c058f56433a5275aa02a2e71d56)
Merge "Added high bitdepth sse2 transform functions"