Fix up license name versions having first checked that the licenses have not changed

git-svn-id: https://svn.apache.org/repos/asf/jmeter/trunk@1553194 13f79535-47bb-0310-9956-ffa450edef68
Add test to check license file name versions

git-svn-id: https://svn.apache.org/repos/asf/jmeter/trunk@1553195 13f79535-47bb-0310-9956-ffa450edef68