[jdk11u-dev] RFR: 8215568: Refactor SA clhsdb tests to use ClhsdbLauncher

[Goetz Lindenmaier]

Hi,
I downport this for parity with 11.0.13-oracle.

In the following files, I had to resolve removal of import of Platform.java:
ClhsdbJstack.java ClhsdbPmap.java ClhsdbPrintStatics.java ClhsdbPstack.java ClhsdbWhere.java

ClhsdbRegionDetailsScanOopsForG1.java was moved to resourcehogs, I applied the change there.

TestIntConstant.java is completely reworked by this change. The patch did not 
apply, but was trivial to resolve.

-------------

Commit messages:
 - Backport 9c09bb98d401e7cd7394c411c9f6f59189137646

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/381/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=381&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8215568
  Stats: 543 lines in 21 files changed: 69 ins; 374 del; 100 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/381.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/381/head:pull/381

PR: https://git.openjdk.java.net/jdk11u-dev/pull/381