SAML2TokenCallbackHandler extensions to handle the SAML tokens

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@176970 a5903396-d722-0410-b921-86c7d4935375
adding extension points to handle saml token in oauth

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@176972 a5903396-d722-0410-b921-86c7d4935375