RFR: 8261225: TieredStopAtLevel should have no effect if TieredCompilation is disabled

Fri Feb 19 15:45:58 UTC 2021

Ignore TieredStopAtLevel flag is TieredCompilation is off for compatibility with the old compilation policy. Also did some polishing of things that came up in the process.

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

Commit messages:
 - Ignore TieredStopAtLevel flag is TieredCompilation is off, polish.

Changes: https://git.openjdk.java.net/jdk/pull/2647/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2647&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8261225
  Stats: 137 lines in 3 files changed: 101 ins; 20 del; 16 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2647.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2647/head:pull/2647

PR: https://git.openjdk.java.net/jdk/pull/2647