Refine handle_inter_intra_mode
Refine handle_inter_intra_mode

Use the motion search result of simple translation as mv predictor
for inter_intra newmv refine search.

Tested BasketballDrill_832x480_50 (20 frames, bitrate=800, Speed 1),
it is 0.4% faster. AWCY result shows 0.03 improvement.

STATS_CHANGED

Change-Id: Iec5763d65dcb72cca95500d29421218eb077acf8

GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom