slight refactor to old-IE detection.
slight refactor to old-IE detection.

embarknow/backbone,d2s/backbone,ohbarye/backbone,wangdahoo/backbone,wjb12/backbone,jungjung917/backbone,Flip120/backbone,tibic/backbone,zdespolit/backbone,linalu1/backbone,huanglp47/backbone,JesseQin/backbone,paulfalgout/backbone,edgeware/backbone,ywenjinlin/backbone,Connectlegendary/backbone,edgeware/backbone,DannyDelott/backbone,zhoufan879/backbone,gmaclennan/backbone,au-phiware/backbone,nikolas/backbone,feychenie/backbone,chyeh727/backbone,cgvarela/backbone,dillonforrest/backbone-df-2,ridixcr/backbone,kuychaco/backbone,pandoraui/backbone,tibic/backbone,timebackzhou/backbone,Aplopio/backbone,moimikey/backbone,webapp/library,liudianpeng/backbone,Niades/backbone,micho/backbone-prototype,jewsroch/backbone,udhayam/backbone,Krasnyanskiy/backbone,guahanweb/backbone,zhangdimelody/backbone,dillonforrest/backbone-df,malandrew/backbone,tzkKrbys/backbone,batigoal1980/backbone_example,sitexa/backbone,megawac/backbone,getshuvo/backbone,platinumazure/backbone,GrimDerp/backbone,premkumargithub/backbone,zhangwei001/backbone,nvoron23/backbone,jewsroch/backbone,chyeh727/backbone,getshuvo/backbone,darrrk/backbone,vin100bk/backbone,linalu1/backbone,elancom/backbone,cailong1028/backbone,maryrosecook/backbone-df,nvoron23/backbone,craigmichaelmartin/backbone,alekskorolev/lightbones,vincent1988/backbone,Bug2014/backbone,braddunbar/backbone,lastjune/backbone,componentizr/backbone,ereddate/backbone,christianqw/backbone,FormidableLabs/backbone,vlazzle/ax-todos,jashkenas/backbone,maryrosecook/backbone-df-2,guigrpa/backbone,elancom/backbone,yawenl/backbone,luffy94608/backbone,nikolas/backbone,jmeas/backbone,gdi2290/backbone,webcoding/backbone,Aplopio/backbone,timebackzhou/backbone,gougouGet/backbone,wxmfront/backbone,heroazure/backbone,au-phiware/backbone,jashkenas/backbone,zhoufan879/backbone,sunday-star/backbone,cgvarela/backbone,Niades/backbone,yuhualingfeng/backbone,mrblueblue/backbone,aihua/backbone,micho/backbone-prototype,GerHobbelt/backbone,jmeas/backbone,closeio/backbone,hugohua/backbone,addyosmani/backbone,akre54/backbone,rwaldron/backbone,leimd/backbone,sueyeh/backbone,trizko/backbone,dcheepurupalli/backbone,ppker/backbone,neocotic/hipbone,dillonforrest/backbone-df,honger05/backbone,webapp/library,fanhc019/backbone,Sachin-Ganesh/backbone,addyosmani/backbone,yuhualingfeng/backbone,embarknow/backbone,cailong1028/backbone,maryrosecook/backbone-df,npmcomponent/solutionio-backbone,ereddate/backbone,gmaclennan/backbone,ebsco/backbone,zhangdimelody/backbone,streamablevideo/backbone,luffy94608/backbone,neocotic/hipbone,maryrosecook/backbone-df-2,Connectlegendary/backbone,dillonforrest/backbone-df-2,pandoraui/backbone,heroazure/backbone,ohbarye/backbone,christianqw/backbone,FishbaitHarry/backbone,antoniogarrote/backbone,mrblueblue/backbone,GrimDerp/backbone,moccen/backbone,wangcan2014/backbone,dak/backbone,cbas/backbone_todo,ntgn81/backbone,wxmfront/backbone,lujocom/backbone,wakanpaladin/mybackbone,ThiagoGarciaAlves/backbone,wakanpaladin/mybackbone,alekskorolev/lightbones,gougouGet/backbone,feychenie/backbone,premkumargithub/backbone,zhangwei001/backbone,howtolearntocode/backbone,platinumazure/backbone,LovelyL25/backbone.js,zgl2007dj/backbone,craigmichaelmartin/backbone,jridgewell/backbone,wushuyi/backbone,sumyfly/backbone,fanhc019/backbone,paulfalgout/backbone,moimikey/backbone,DannyDelott/backbone,jordansexton/backboner,wushuyi/backbone,vlazzle/ax-todos,dillonforrest/backbone-df-2,tgriesser/backbone,7213/backbone,dcheepurupalli/backbone,rwaldron/backbone,jridgewell/backbone,anhtholee/backbone,Diwahars/backbone,Diwahars/backbone,malandrew/backbone,Flip120/backbone,trizko/backbone,virtru-components/backbone,Khan/backbone,sitexa/backbone,huanglp47/backbone,Aplopio/backbone,kuychaco/backbone,jstrimpel/backbone,elma-cao/backbone,oss-practice/backbone,gfranko/backbone,amitpatange88/backbonejs,Sachin-Ganesh/backbone,moccen/backbone,youprofit/backbone,tadwhitaker/backbone,tadwhitaker/backbone,vin100bk/backbone,yawenl/backbone,ridixcr/backbone,IsoldaJS/isolda-models,ThisIsManta/Backbone,mpapp/backbone,streamablevideo/backbone,akre54/backbone,batigoal1980/backbone_example,FishbaitHarry/backbone,gitterHQ/backbone,IsoldaJS/isolda-pubsub,Khan/backbone,youprofit/backbone,Khan/backbone,ThiagoGarciaAlves/backbone,tzkKrbys/backbone,mmolinastudio/backbone,jstrimpel/backbone,Bug2014/backbone,braddunbar/backbone,guahanweb/backbone,Akkuma/backbone,wangcan2014/backbone,elma-cao/backbone,liudianpeng/backbone,zdespolit/backbone,zgl2007dj/backbone,ppker/backbone,leimd/backbone,ThisIsManta/Backbone,maryrosecook/backbone-df,dillonforrest/backbone-df,npmcomponent/jashkenas-backbone,7213/backbone,juggy/backbone,rashmisajjan/backbone,gfranko/backbone,anhtholee/backbone,wjb12/backbone,lastjune/backbone,lujocom/backbone,ntgn81/backbone,ebsco/backbone,jasoncbautista/backboneX,rashmisajjan/backbone,mmolinastudio/backbone,honger05/backbone,vincent1988/backbone,d2s/backbone,dak/backbone,amdjs/backbone,sumyfly/backbone,webcoding/backbone,npmcomponent/solutionio-backbone,Krasnyanskiy/backbone,closeio/backbone,GerHobbelt/backbone,sunday-star/backbone,rjz/boneless,christianqw/backbone,LovelyL25/backbone.js,aihua/backbone,udhayam/backbone,amitpatange88/backbonejs,wangdahoo/backbone,darrrk/backbone,ywenjinlin/backbone,JesseQin/backbone,sueyeh/backbone,howtolearntocode/backbone,jungjung917/backbone,maryrosecook/backbone-df-2