Return value from Tester class<<runTest

[Michael McClary <michael>]

Someone recently changed the method runTest to return the contents of the
output stream from the test.

Is this being used by anyone?  (I'd look for senders, but runTest gets
used bn DoIt-ing comments a lot.)

If no one needs this value, I'd like to modify the method to return
the runtime of the test, rather than printing it on Transcript.
This is because the timing returned by millisecondsToRun: is
apparently derived from the realtime clock, and thus varies enough
to blow away regression tests.

(The integrator should note that my fileout in next:mjm-a.cha includes
 a modification to runTest that prints the time on Transcript.  This
 is a temporary hack and should go away.)

	michael