Add extra info into InterModeRdVector
Add extra info into InterModeRdVector

The extra info includes rdmult, ref_mv_count and ref_mv_idx

Change-Id: I5929d1b0b41c89e8a9290bb99b7bb8ce943ea2c6

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