added constant for iOS 7 foundation
added constant for iOS 7 foundation

AmberWhiteSky/DTCoreText,sujeking/DTCoreText,openresearch/DTCoreText,cnbin/DTCoreText,artifacts/DTCoreText,shuoshi/DTCoreText,devontech/DTCoreText,depl0y/DTCoreText,thusfresh/DTCoreText,iwakevin/DTCoreText,barz/DTCoreText,artifacts/DTCoreText,liulinjian/DTCoreText,bnickel/DTCoreText,gank0326/CoreTextWithHTML,sidslog/DTCoreText,Esdeath/DTCoreText,thusfresh/DTCoreText,qskycolor/DTCoreText,Akylas/DTCoreText,i-miss-you/DTCoreText,wangmb/DTCoreText,iwakevin/DTCoreText,Akylas/DTCoreText,wangmb/DTCoreText,liulinjian/DTCoreText,artifacts/DTCoreText,jjamminjim/DTCoreText,z8927623/DTCoreText,gnr/DTCoreText,Cocoanetics/DTCoreText,barz/DTCoreText,artifacts/DTCoreText,wlisac/DTCoreText,Cocoanetics/DTCoreText,SanjoDeundiak/DTCoreText,DanGe42/DTCoreText,qskycolor/DTCoreText,goodheart/DTCoreText,appunite/DTCoreText,w2592583/DTCoreText,liuslevis/DTCoreText,sujeking/DTCoreText,rgregg/DTCoreText,esteluk/DTCoreText,z8927623/DTCoreText,bnickel/DTCoreText,jingchunYuan/DTCoreText,gsempe/DTCoreText,cnbin/DTCoreText,goodheart/DTCoreText,rain1988/DTCoreText,wlisac/DTCoreText,programming086/DTCoreText,gank0326/CoreTextWithHTML,davbeck/DTCoreText,Cocoanetics/DTCoreText,shuoshi/DTCoreText,rain1988/DTCoreText,depl0y/DTCoreText,pivotaltracker/DTCoreText,1yvT0s/DTCoreText,niklassaers/DTCoreText,canyu9512/DTCoreText,jingchunYuan/DTCoreText,CoderJWYang/DTCoreText,rgregg/DTCoreText,appunite/DTCoreText,i-miss-you/DTCoreText,xiaoyanit/DTCoreText,youprofit/DTCoreText,1yvT0s/DTCoreText,canyu9512/DTCoreText,gsempe/DTCoreText,DanGe42/DTCoreText,yaoxiaoyong/DTCoreText,SanjoDeundiak/DTCoreText,AmberWhiteSky/DTCoreText,davbeck/DTCoreText,holgersindbaek/DTCoreText,devontech/DTCoreText,niklassaers/DTCoreText