Issue  7762: Ignore output on stderr when guessing VCS (targets issue59).
Issue  7762: Ignore output on stderr when guessing VCS (targets issue59).

gavioto/rietveld,sajingeo/rietveld,dushmis/rietveld,sajingeo/rietveld,nbodepallictr/touchites-test,rietveld-codereview/rietveld,DeanHere/rietveld,gavioto/rietveld,xtypebee/rietveld,foolonhill/rietveld,rietveld-codereview/rietveld,salomon1184/rietveld,supriyantomaftuh/rietveld,openlabs/cr.openlabs.co.in,v3ss0n/rietveld,arg0/rietveld,robfig/rietveld,nareshboddepalli/touchites-codereview,ericmckean/rietveld,Koulio/rietveld,supriyantomaftuh/rietveld,google-code-export/rietveld,Koulio/rietveld,sajingeo/rietveld,andyzsf/rietveld,nbodepallictr/touchites-codereview,google-code-export/rietveld,rietveld-codereview/rietveld,nbodepallictr/touchites-test,aungzanbaw/rietveld,robfig/rietveld,berkus/rietveld,openlabs/cr.openlabs.co.in,draem0507/rietveld,gavioto/rietveld,nareshboddepalli/touchites-test,rietveld-codereview/rietveld,nareshboddepalli/touchites-codereview,gco/rietveld,kscharding/integral-solutions-smxq,nareshboddepalli/touchites-test,Koulio/rietveld,kscharding/integral-solutions-smxq,robfig/rietveld,xtypebee/rietveld,dushmis/rietveld,gco/rietveld,fuzan/rietveld,salomon1184/rietveld,andyzsf/rietveld,kscharding/integral-solutions-smxq,openlabs/cr.openlabs.co.in,aungzanbaw/rietveld,nbodepallictr/touchites-test,berkus/rietveld,google-code-export/rietveld,arg0/rietveld,aungzanbaw/rietveld,nbodepallictr/touchites-codereview,ericmckean/rietveld,DeanHere/rietveld,v3ss0n/rietveld,arg0/rietveld,nbodepallictr/touchites-codereview,fuzan/rietveld,supriyantomaftuh/rietveld,andyzsf/rietveld,berkus/rietveld,gco/rietveld,nareshboddepalli/touchites-codereview,DeanHere/rietveld,nareshboddepalli/touchites-test,xtypebee/rietveld,ericmckean/rietveld,dushmis/rietveld,draem0507/rietveld,foolonhill/rietveld,fuzan/rietveld,foolonhill/rietveld,salomon1184/rietveld,draem0507/rietveld,v3ss0n/rietveld