Add black_boxes to benchs
Add black_boxes to benchs

birkenfeld/racer,andelf/racer,racer-rust/racer,jaxx/racer,drewet/racer,Wilfred/racer,bluss/racer,MattWis/racer,syohex/racer,sthapaun/racer,BonsaiDen/racer,MattWis/racer,ajroetker/racer,pmarcelll/racer,kbknapp/racer,drewet/racer,hotpxl/racer,ajroetker/racer,syohex/racer,bluss/racer,sliz1/racer,asantopietro/racer,ane/racer,syhkiller/racer,BonsaiDen/racer,rranelli/racer,asantopietro/racer,phildawes/racer,ifraixedes/racer,kbknapp/racer,marvelm/racer,alkama/racer,ane/racer,ifraixedes/racer,rranelli/racer,syhkiller/racer,dleslie/racer,sthapaun/racer