PHPCAS-43 PHPCAS-88 Refactored CAS2.0 extended attributes code to avoid repetition.
PHPCAS-43 PHPCAS-88 Refactored CAS2.0 extended attributes code to avoid repetition.

git-svn-id: 94f0db08461a0213b6c0921e79b985cd37b48048@22475 f5dbab47-78f9-eb45-b975-e544023573eb

yangchunyong/phpCAS,rakesh-mohanta/phpCAS,fh/phpCAS,snelg/phpCAS,neopeak/phpCAS,mickelfeng/phpCAS,chand3040/phpCAS,Jasig/phpCAS