RFR(s): 8168409 Update list of tools run by the jtreg timeouthandler

[Staffan Larsen]

Please review this small update to the list of tools that the jtreg timeouthandler runs when a timeout is hit. This change removes all calls to the old SA-tools and instead uses Diagnostic Commands to gather the same information. The possible drawback is that Diagnostic Commands do not work on processes where the JVM is completely hung, but in that case we can fallback to running the SA-tools on the core file that is also generated.

webrev: http://cr.openjdk.java.net/~sla/8168409/webrev.00 <http://cr.openjdk.java.net/~sla/8168409/webrev.00>
bug: https://bugs.openjdk.java.net/browse/JDK-8168409 <https://bugs.openjdk.java.net/browse/JDK-8168409>

Thanks,
/Staffan