KalturaResponseCacher bug fix: when a sub request within a multi request disables caching the entire multi request should not be cached.  Before the fix, if we had a multi request with 3 requests and only the second should not be cached because it has access control, the entire multi request would have been cached (because when the third is processed it will set $_useCache to true).
KalturaResponseCacher bug fix: when a sub request within a multi request disables caching the entire multi request should not be cached. 
Before the fix, if we had a multi request with 3 requests and only the second should not be cached because it has access control, the entire multi request would have been cached (because when the third is processed it will set $_useCache to true).

git-svn-id: 8a2ccb88241e16c78017770bc38d91d6d5396a5a@62667 6b8eccd3-e8c5-4e7d-8186-e12b5326b719

doubleshot/server,DBezemer/server,ratliff/server,doubleshot/server,gale320/server,doubleshot/server,ratliff/server,jorgevbo/server,ivesbai/server,ratliff/server,jorgevbo/server,gale320/server,ivesbai/server,DBezemer/server,ivesbai/server,matsuu/server,ratliff/server,doubleshot/server,gale320/server,DBezemer/server,ivesbai/server,matsuu/server,kaltura/server,gale320/server,doubleshot/server,matsuu/server,ivesbai/server,ratliff/server,DBezemer/server,ratliff/server,jorgevbo/server,gale320/server,jorgevbo/server,doubleshot/server,jorgevbo/server,DBezemer/server,kaltura/server,gale320/server,matsuu/server,ivesbai/server,jorgevbo/server,matsuu/server,jorgevbo/server,kaltura/server,kaltura/server,ratliff/server,doubleshot/server,DBezemer/server,kaltura/server,jorgevbo/server,DBezemer/server,DBezemer/server,ratliff/server,kaltura/server,matsuu/server,doubleshot/server,matsuu/server,gale320/server,ivesbai/server,gale320/server,matsuu/server,ivesbai/server