Account for elided extrabits during rate cost calculation.
Fixes some rd-debug mismatches coding cat6 tokens with tx size < 32x32. For these tokens the high extrabits are elided during tokenization and detokenization, but the rd cost was computed with the old tables from VP9 where these high extrabits are always coded. Change-Id: I4a9a6ea822ff821e1932c351d43a57bdb4d6d466
Showing with 128 additions and 162 deletions