merging 4.1.0 branch changes to trunk

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@171978 a5903396-d722-0410-b921-86c7d4935375
merging 4.1.0 branch changes to trunk

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@171979 a5903396-d722-0410-b921-86c7d4935375