adding new User Manager API - in progress

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/kernel/trunk@178169 a5903396-d722-0410-b921-86c7d4935375


git-svn-id: https://svn.wso2.org/repos/wso2/carbon/kernel/trunk@178170 a5903396-d722-0410-b921-86c7d4935375