Adding sso.agent to build

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@179038 a5903396-d722-0410-b921-86c7d4935375
Adding SSOAgentSample to build

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@179039 a5903396-d722-0410-b921-86c7d4935375
annotation scheme improvements

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@179040 a5903396-d722-0410-b921-86c7d4935375