updating pandas to git commit for 0.9rc2
updating pandas to git commit for 0.9rc2

semio/zipline,umuzungu/zipline,florentchandelier/zipline,zhoulingjun/zipline,magne-max/zipline-ja,morrisonwudi/zipline,mattcaldwell/zipline,mattcaldwell/zipline,ChinaQuants/zipline,euri10/zipline,enigmampc/catalyst,Scapogo/zipline,chrjxj/zipline,AlirezaShahabi/zipline,cmorgan/zipline,enigmampc/catalyst,ChinaQuants/zipline,zhoulingjun/zipline,aajtodd/zipline,nborggren/zipline,magne-max/zipline-ja,gwulfs/zipline,wilsonkichoi/zipline,iamkingmaker/zipline,davidastephens/zipline,YuepengGuo/zipline,keir-rex/zipline,dhruvparamhans/zipline,wubr2000/zipline,alphaBenj/zipline,jordancheah/zipline,florentchandelier/zipline,jimgoo/zipline-fork,nborggren/zipline,CDSFinance/zipline,dmitriz/zipline,erikness/AlephOne,kmather73/zipline,michaeljohnbennett/zipline,joequant/zipline,bartosh/zipline,cmorgan/zipline,otmaneJai/Zipline,MonoCloud/zipline,aajtodd/zipline,StratsOn/zipline,kmather73/zipline,davidastephens/zipline,dmitriz/zipline,chrjxj/zipline,michaeljohnbennett/zipline,jordancheah/zipline,dkushner/zipline,stkubr/zipline,keir-rex/zipline,DVegaCapital/zipline,humdings/zipline,DVegaCapital/zipline,joequant/zipline,gwulfs/zipline,CarterBain/AlephNull,AlirezaShahabi/zipline,quantopian/zipline,sketchytechky/zipline,alphaBenj/zipline,dkushner/zipline,iamkingmaker/zipline,ronalcc/zipline,Scapogo/zipline,otmaneJai/Zipline,StratsOn/zipline,jimgoo/zipline-fork,quantopian/zipline,MonoCloud/zipline,YuepengGuo/zipline,grundgruen/zipline,wubr2000/zipline,semio/zipline,grundgruen/zipline,dhruvparamhans/zipline,morrisonwudi/zipline,umuzungu/zipline,wilsonkichoi/zipline,bartosh/zipline,sketchytechky/zipline,CDSFinance/zipline,ronalcc/zipline,humdings/zipline,stkubr/zipline,euri10/zipline,erikness/AlephOne,CarterBain/AlephNull