Add unit tests for 4x4 ADST
Add unit tests for 4x4 ADST

Enable sign bias check and round-trip error unit tests for 4x4 hybrid
transform modules.

Change-Id: Icd3d839f098d4b92b00ff76eac146765b039d0d3

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