Select motion compensation search starting point from among merge candidates.
Select motion compensation search starting point from among merge candidates.

- Greatly reduces bdrate for most sequences.

lu-zero/kvazaar,lu-zero/kvazaar,ultravideo/kvazaar,ultravideo/kvazaar,ultravideo/kvazaar,lu-zero/kvazaar,ultravideo/kvazaar,lu-zero/kvazaar,ultravideo/kvazaar