8182154: merge jdk.testlibrary.Platform and jdk.test.lib.Platform
Reviewed-by: sspitsyn, plevart

8157957: ClassNotFoundException: jdk.test.lib.JDKToolFinder
Reviewed-by: coleenp, gtriantafill, mseledtsov, iignatyev, dholmes, dsamersoff

8141526: Allow to collect stdout/stderr from the FinalizationRunner even before the process returns
Reviewed-by: dsamersoff

8022229: Intermittent test failures in sun/tools/jstatd
Reviewed-by: sla, egahlin, jbachorik, allwin