configure: test for -msse4
configure: test for -msse4

not present in < GCC 4.2

Change-Id: I7b1a3078fd782644b1c432ce682d2160ffc2263a

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