Apply mv precision check to reference mv candidate
Apply mv precision check to reference mv candidate

This allows the codec to use effective motion vector as the candidate
to produce the reference motion vector list.

Change-Id: Ib90be705fe28200c13376d6d7741800a61f13043

GrokImageCompression/aom,mbebenita/aom,mbebenita/aom,luctrudeau/aom,GrokImageCompression/aom,luctrudeau/aom,mbebenita/aom,smarter/aom,smarter/aom,GrokImageCompression/aom,luctrudeau/aom,smarter/aom,GrokImageCompression/aom,mbebenita/aom,luctrudeau/aom,luctrudeau/aom,mbebenita/aom,smarter/aom,luctrudeau/aom,mbebenita/aom,mbebenita/aom,GrokImageCompression/aom,mbebenita/aom,GrokImageCompression/aom,mbebenita/aom,smarter/aom,smarter/aom