New vp8_decode_mb_tokens()
New vp8_decode_mb_tokens()

This new vp8_decode_mb_tokens() uses a modified version of
WebP's GetCoeffs function.  For now, the dequant does not
occur in GetCoeffs.
Tests showed performance improvements up to 2.5% depending
on material.

Change-Id: Ia24d78627e16ffee5eb4d777ee8379a9270f07c5

turbulenz/libvpx,shareefalis/libvpx,felipebetancur/libvpx,GrokImageCompression/aom,goodleixiao/vpx,matanbs/webm.libvpx,altogother/webm.libvpx,abwiz0086/webm.libvpx,jdm/libvpx,stewnorriss/libvpx,vasilvv/esvp8,jmvalin/aom,shacklettbp/aom,mwgoldsmith/vpx,ittiamvpx/libvpx-1,vasilvv/esvp8,gshORTON/webm.libvpx,pcwalton/libvpx,Topopiccione/libvpx,VTCSecureLLC/libvpx,iniwf/webm.libvpx,Distrotech/libvpx,running770/libvpx,iniwf/webm.libvpx,openpeer/libvpx_new,mwgoldsmith/vpx,mbebenita/aom,kleopatra999/webm.libvpx,kim42083/webm.libvpx,shareefalis/libvpx,goodleixiao/vpx,lyx2014/libvpx_c,mbebenita/aom,GrokImageCompression/aom,zofuthan/libvpx,VTCSecureLLC/libvpx,Topopiccione/libvpx,Maria1099/webm.libvpx,kleopatra999/webm.libvpx,gshORTON/webm.libvpx,webmproject/libvpx,running770/libvpx,jmvalin/aom,ittiamvpx/libvpx-1,vasilvv/esvp8,liqianggao/libvpx,shyamalschandra/libvpx,Acidburn0zzz/webm.libvpx,Maria1099/webm.libvpx,kalli123/webm.libvpx,luctrudeau/aom,reimaginemedia/webm.libvpx,ittiamvpx/libvpx,running770/libvpx,mbebenita/aom,shareefalis/libvpx,altogother/webm.libvpx,pcwalton/libvpx,matanbs/webm.libvpx,openpeer/libvpx_new,Distrotech/libvpx,sanyaade-teachings/libvpx,thdav/aom,shyamalschandra/libvpx,zofuthan/libvpx,Laknot/libvpx,thdav/aom,mbebenita/aom,abwiz0086/webm.libvpx,Laknot/libvpx,matanbs/vp982,shareefalis/libvpx,iniwf/webm.libvpx,VTCSecureLLC/libvpx,matanbs/vp982,WebRTC-Labs/libvpx,goodleixiao/vpx,cinema6/libvpx,liqianggao/libvpx,hsueceumd/test_hui,matanbs/vp982,shacklettbp/aom,jdm/libvpx,kleopatra999/webm.libvpx,openpeer/libvpx_new,liqianggao/libvpx,running770/libvpx,GrokImageCompression/aom,iniwf/webm.libvpx,cinema6/libvpx,sanyaade-teachings/libvpx,jacklicn/webm.libvpx,matanbs/webm.libvpx,liqianggao/libvpx,ShiftMediaProject/libvpx,thdav/aom,hsueceumd/test_hui,abwiz0086/webm.libvpx,Maria1099/webm.libvpx,n4t/libvpx,VTCSecureLLC/libvpx,running770/libvpx,gshORTON/webm.libvpx,mwgoldsmith/vpx,felipebetancur/libvpx,kim42083/webm.libvpx,webmproject/libvpx,jdm/libvpx,ittiamvpx/libvpx-1,ittiamvpx/libvpx,turbulenz/libvpx,n4t/libvpx,jmvalin/aom,altogother/webm.libvpx,kalli123/webm.libvpx,mwgoldsmith/vpx,smarter/aom,ittiamvpx/libvpx,openpeer/libvpx_new,VTCSecureLLC/libvpx,luctrudeau/aom,stewnorriss/libvpx,thdav/aom,goodleixiao/vpx,lyx2014/libvpx_c,shareefalis/libvpx,reimaginemedia/webm.libvpx,vasilvv/esvp8,cinema6/libvpx,matanbs/webm.libvpx,VTCSecureLLC/libvpx,Suvarna1488/webm.libvpx,n4t/libvpx,stewnorriss/libvpx,altogother/webm.libvpx,abwiz0086/webm.libvpx,mwgoldsmith/libvpx,charup/https---github.com-webmproject-libvpx-,smarter/aom,abwiz0086/webm.libvpx,Distrotech/libvpx,thdav/aom,matanbs/vp982,altogother/webm.libvpx,reimaginemedia/webm.libvpx,Laknot/libvpx,turbulenz/libvpx,kim42083/webm.libvpx,cinema6/libvpx,altogother/webm.libvpx,hsueceumd/test_hui,felipebetancur/libvpx,reimaginemedia/webm.libvpx,Suvarna1488/webm.libvpx,ShiftMediaProject/libvpx,WebRTC-Labs/libvpx,cinema6/libvpx,ittiamvpx/libvpx-1,Acidburn0zzz/webm.libvpx,charup/https---github.com-webmproject-libvpx-,jmvalin/aom,hsueceumd/test_hui,jmvalin/aom,jdm/libvpx,ShiftMediaProject/libvpx,mwgoldsmith/libvpx,WebRTC-Labs/libvpx,abwiz0086/webm.libvpx,jdm/libvpx,lyx2014/libvpx_c,Topopiccione/libvpx,lyx2014/libvpx_c,jacklicn/webm.libvpx,stewnorriss/libvpx,kim42083/webm.libvpx,mbebenita/aom,goodleixiao/vpx,stewnorriss/libvpx,matanbs/vp982,Suvarna1488/webm.libvpx,luctrudeau/aom,luctrudeau/aom,sanyaade-teachings/libvpx,Topopiccione/libvpx,shareefalis/libvpx,kim42083/webm.libvpx,shacklettbp/aom,kalli123/webm.libvpx,openpeer/libvpx_new,matanbs/vp982,vasilvv/esvp8,mwgoldsmith/libvpx,Suvarna1488/webm.libvpx,turbulenz/libvpx,jacklicn/webm.libvpx,vasilvv/esvp8,turbulenz/libvpx,liqianggao/libvpx,shyamalschandra/libvpx,mbebenita/aom,Laknot/libvpx,shacklettbp/aom,matanbs/webm.libvpx,zofuthan/libvpx,shyamalschandra/libvpx,Distrotech/libvpx,n4t/libvpx,Maria1099/webm.libvpx,stewnorriss/libvpx,shyamalschandra/libvpx,kalli123/webm.libvpx,mwgoldsmith/libvpx,kalli123/webm.libvpx,reimaginemedia/webm.libvpx,turbulenz/libvpx,Acidburn0zzz/webm.libvpx,zofuthan/libvpx,kleopatra999/webm.libvpx,GrokImageCompression/aom,ShiftMediaProject/libvpx,charup/https---github.com-webmproject-libvpx-,gshORTON/webm.libvpx,WebRTC-Labs/libvpx,GrokImageCompression/aom,mwgoldsmith/vpx,ittiamvpx/libvpx,goodleixiao/vpx,mbebenita/aom,jacklicn/webm.libvpx,cinema6/libvpx,webmproject/libvpx,felipebetancur/libvpx,felipebetancur/libvpx,shyamalschandra/libvpx,charup/https---github.com-webmproject-libvpx-,Laknot/libvpx,webmproject/libvpx,shacklettbp/aom,Acidburn0zzz/webm.libvpx,mbebenita/aom,iniwf/webm.libvpx,kleopatra999/webm.libvpx,running770/libvpx,openpeer/libvpx_new,pcwalton/libvpx,vasilvv/esvp8,Laknot/libvpx,mwgoldsmith/libvpx,pcwalton/libvpx,sanyaade-teachings/libvpx,Maria1099/webm.libvpx,mbebenita/aom,webmproject/libvpx,hsueceumd/test_hui,WebRTC-Labs/libvpx,pcwalton/libvpx,Distrotech/libvpx,ittiamvpx/libvpx,webmproject/libvpx,ShiftMediaProject/libvpx,lyx2014/libvpx_c,ittiamvpx/libvpx-1,kleopatra999/webm.libvpx,turbulen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