[JGRP-1788] Backport selected changes from JGroups 3.4
[JGRP-1725] Fix testsuite output collection on Windows.
[JGRP-1739] Fix test output leaking across test cases.
[JGRP-1787] Adjust command line parameter processing to accept more than 9 parameters.
- Added sleepUninterrupted() to TimeSchedulerTest