Update correct macroblock quantize_b function ptrs
Update correct macroblock quantize_b function ptrs

WIP: Fixing unsafe threading in VP8 encoder.
Use the passed in macroblock instead of the macroblock located in
cpi.

Change-Id: I1bfa07de6ea463f2baeaae1bae5d950691bc4afc

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