libmkv: fix Makefile.
libmkv: fix Makefile.

Update the local makefile to build all the files and the test
application by default to simplify build verification.

Change-Id: Ic10141ea14c85110ff7507447d16297b77d296e9

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