committing custom sequences feature

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@181236 a5903396-d722-0410-b921-86c7d4935375
SS-134 fixed

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@181237 a5903396-d722-0410-b921-86c7d4935375