hg: jdk/sandbox: 8230942: Support compressed cores in SA tests

[chris.hegarty at oracle.com]

Changeset: 9a3a700ca571
Author:    lmesnik
Date:      2019-09-27 10:48 -0700
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/9a3a700ca571

8230942: Support compressed cores in SA tests
Reviewed-by: dholmes, sspitsyn

! test/hotspot/jtreg/serviceability/sa/ClhsdbCDSCore.java
! test/hotspot/jtreg/serviceability/sa/TestJmapCore.java
! test/lib/jdk/test/lib/SA/SATestUtils.java