Fix to apply servicepack if ther is no backup directory

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/kernel/trunk@177710 a5903396-d722-0410-b921-86c7d4935375
separating out thirdparty bundle-configs and log4j properties config

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/kernel/trunk@177711 a5903396-d722-0410-b921-86c7d4935375