fixed buildResponderList: in CCResponderManager
fixed buildResponderList: in CCResponderManager

previously *buildResponderList:* overlooked adding the current node to the responder list if the node *only* contained children with a negative z-index while having interactions enabled.
 
flagging the node for possible addition, then eventually adding it should patch this.
 
and some minimisations.
knight2010/cocos2d-objc,nader-eloshaiker/cocos2d-objc,zaneLou/cocos2d-objc,codepython/cocos2d-objc,dnessorga/cocos2d-objc,tambarskjelve/cocos2d-objc,DNESS/cocos2d-objc,SuPair/cocos2d-objc,DNESS/cocos2d-objc,lpeancovschi/cocos2d-objc,yaoxiaoyong/cocos2d-objc,liduanw/cocos2d-objc,seem-sky/cocos2d-swift,knight2010/cocos2d-objc,TukekeSoft/cocos2d-spritebuilder,oxeron/cocos2d-objc,SuPair/cocos2d-objc,savysoda/cocos2d-objc,codepython/cocos2d-objc,cogddo/cocos2d-objc,richardgroves/cocos2d-iphone,TukekeSoft/cocos2d-spritebuilder,seem-sky/cocos2d-swift,knight2010/cocos2d-objc,nader-eloshaiker/cocos2d-objc,SuPair/cocos2d-objc,lpeancovschi/cocos2d-objc,cogddo/cocos2d-objc,cocos2d/cocos2d-objc,liduanw/cocos2d-objc,DNESS/cocos2d-objc,dnessorga/cocos2d-objc,dnessorga/cocos2d-objc,seem-sky/cocos2d-swift,TukekeSoft/cocos2d-spritebuilder,codepython/cocos2d-objc,nader-eloshaiker/cocos2d-objc,cocos2d/cocos2d-objc,yaoxiaoyong/cocos2d-objc,seem-sky/cocos2d-swift,knight2010/cocos2d-objc,DNESS/cocos2d-objc,savysoda/cocos2d-objc,zaneLou/cocos2d-objc,liduanw/cocos2d-objc,finthamoussu/cocos2d-objc,zaneLou/cocos2d-objc,liduanw/cocos2d-objc,zaneLou/cocos2d-objc,yaoxiaoyong/cocos2d-objc,cogddo/cocos2d-objc,savysoda/cocos2d-objc,oxeron/cocos2d-objc,finthamoussu/cocos2d-objc,dnessorga/cocos2d-objc,tambarskjelve/cocos2d-objc,tambarskjelve/cocos2d-objc,tambarskjelve/cocos2d-objc,richardgroves/cocos2d-iphone,lpeancovschi/cocos2d-objc,finthamoussu/cocos2d-objc,SuPair/cocos2d-objc,dnessorga/cocos2d-objc,nader-eloshaiker/cocos2d-objc,yaoxiaoyong/cocos2d-objc,cogddo/cocos2d-objc,finthamoussu/cocos2d-objc,tambarskjelve/cocos2d-objc,SuPair/cocos2d-objc,yaoxiaoyong/cocos2d-objc,lpeancovschi/cocos2d-objc,richardgroves/cocos2d-iphone,liduanw/cocos2d-objc,codepython/cocos2d-objc,TukekeSoft/cocos2d-spritebuilder,DNESS/cocos2d-objc,savysoda/cocos2d-objc