Hi all,

With this commit the long-unused gnu.testlet.TestSecurityManager has
been replaced by what was gnu.testlet.TestSecurityManager2.  Since
this required touching all throwpoint checks I made a bunch of other
changes I've been wanting to make for some time.  The main change is
that the way that halting checks work has changed to make it more
obvious what's happening.  Other changes were that checkAllChecked()
lost it's unnecessary harness argument, tests that caught Throwable
have been changed to catch Exception, and that TestSecurityManager now
has javadoc to tell you how to use it.

Cheers,
Gary
kk