RFR: 8273612: Fix for JDK-8272873 causes timeout in running some tests with -Xcomp

[Igor Veresov]

With tiered it just so happened that profiles are reported as mature with -Xcomp. For some tests this leads to pathological profiles that causes excessive execution time. The fix it make profiles immature when running with -Xcomp.

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Commit messages:
 - Fix the tests
 - Report profiles as immature with -Xcomp

Changes: https://git.openjdk.java.net/jdk/pull/5815/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5815&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273612
  Stats: 9 lines in 3 files changed: 4 ins; 2 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5815.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5815/head:pull/5815

PR: https://git.openjdk.java.net/jdk/pull/5815