XBEAN-243 reworking getURLs to find really all jars with a workarounf for surefire (sadly) and a system property to go back to old behavior (if needed)

git-svn-id: https://svn.apache.org/repos/asf/geronimo/xbean/trunk@1475801 13f79535-47bb-0310-9956-ffa450edef68