While trying to track down some intermittent test failures in recent
kaffe I found a problem in
gnu/testlet/java/lang/Thread/contextClassLoader.java. When testing that
context class loaders gets inherited correctly the mauve test assumes
that the first thread will complete before the data is set up for the
next one. When new thread execution for some reason is slow the test
will sometimes fail.

The attached patch solves the problem by waiting for the first thread to
finish before the next one is set up.

/noa