RFR: 8299240: rank of JvmtiVTMSTransition_lock can be safepoint

Tue Feb 14 05:45:34 UTC 2023

The rank of JvmtiVTMSTransition_lock is better to be safepoint instead of nosafepoint.
The fix includes removal of the function `check_vthread_and_suspend_at_safepoint` which is not needed anymore.

Testing:
mach5 jobs are in progress:
 Kitchensink, tiers1-6 (all JVMTI, JDWP, JDI and JDB tests have to be included)

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

Commit messages:
 - 8299240: rank of JvmtiVTMSTransition_lock can be safepoint

Changes: https://git.openjdk.org/jdk/pull/12550/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12550&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8299240
  Stats: 49 lines in 6 files changed: 8 ins; 30 del; 11 mod
  Patch: https://git.openjdk.org/jdk/pull/12550.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12550/head:pull/12550

PR: https://git.openjdk.org/jdk/pull/12550