Add wildcard support in test-case/test-suite filenames

[fbaligand]

It would be cool to support wildcards in test-case/test-suite filename option, when calling selenese-runner-java tool.

Ideally, "ant-style" wildcard support would be great. "ant-style" wildcard is both powerfull and widely used (in ant, but also maven and spring-security for instance).

So, for example, this would be great to support something like that : java -jar selenese-runner.jar **/*.html