Beanshell and Apache BSF don't like each other. As the test is going
to use Javascript anyway, the check whether scripting is available
should do so, too. In particular, the test will now checke whether
Rhino is there, which the old test didn't.
Remove excess logging that lead me to think the test was failing
instead of skipped.
git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@274462 13f79535-47bb-0310-9956-ffa450edef68