Extensions compatibility

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@10868 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Extensions compatibility

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@10869 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
fixed possible bug

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@10870 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
fixed possible bug

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@10871 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c