FileHandler now uses the locator-based locate() method when loading its file.

This means that the customizable FileLocationStrategy is applied; applications
can change the algorithm for searching for configuration files.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1527231 13f79535-47bb-0310-9956-ffa450edef68
Use a simpler way to obtain a URL in a test case.

The old FileLocatorUtils.locate() method has become obsolete, so all references
to it have to be removed.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1527232 13f79535-47bb-0310-9956-ffa450edef68