hg: loom/loom: 2 new changesets

[chris.plummer at oracle.com]

Changeset: 321de2382946
Author:    cjplummer
Date:      2019-06-16 11:43 -0700
URL:       http://hg.openjdk.java.net/loom/loom/rev/321de2382946

Support 4 different run modes + bit of cleanup in the agent.

! test/hotspot/jtreg/serviceability/jvmti/DoContinueSingleStepTest/DoContinueSingleStepTest.java
! test/hotspot/jtreg/serviceability/jvmti/DoContinueSingleStepTest/libDoContinueSingleStepTest.cpp

Changeset: 30ec120179cd
Author:    cjplummer
Date:      2019-06-16 11:54 -0700
URL:       http://hg.openjdk.java.net/loom/loom/rev/30ec120179cd

Merge