Fix speed 7 and speed 12 for rt

A recent change has introduced big quality drops for speed 7 and 12
for --rt mode. The change reverted the big drop and improved quality
by 9.5% for speed 7 and 13.4% for speed 12.

Change-Id: I07b82e3bb6002a73af486a083458c88877bdad01
Fix the THR_MODES array used in vp9_pick_inter_mode

Fix the alignment of entries fo intra prediction modes.

Change-Id: Ie32ad87cf90694efd591a4b1cc29c916c4cd56f7
Merge "Fix speed 7 and speed 12 for rt"
Merge "Fix the THR_MODES array used in vp9_pick_inter_mode"