git: openjdk/loom: fibers: Enable FRAME_POP events. Disable failure for getting a METHOD on a cthread.

[duke]

Changeset: a82a528c
Author:    Chris Plummer <chris.plummer at oracle.com>
Date:      2020-12-05 03:33:00 +0000
URL:       https://git.openjdk.java.net/loom/commit/a82a528c

Enable FRAME_POP events. Disable failure for getting a METHOD on a cthread.

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