Replacing b_width_log2 with num_4x4_blocks_wide_lookup.
Replacing b_width_log2 with num_4x4_blocks_wide_lookup.

Change-Id: I8ab9bbe2595ed1743f35223b6a6ce6d023b9a20e

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