add stub test to ensure sinon matcher is recognized within stub.withArgs
add stub test to ensure sinon matcher is recognized within stub.withArgs

fatso83/Sinon.JS,cjohansen/Sinon.JS,mroderick/Sinon.JS,jishi/sinon,fatso83/Sinon.JS,mroderick/Sinon.JS,jishi/sinon,andpor/sinon,Khan/Sinon.JS,andpor/sinon,fatso83/Sinon.JS,Khan/Sinon.JS,cjohansen/Sinon.JS,Khan/Sinon.JS,cjohansen/Sinon.JS,andpor/sinon,mroderick/Sinon.JS,jishi/sinon