RFR(XS): 8225453: is_busy diagnostics and other baseline cleanups from Async Monitor Deflation project

[Daniel D. Daugherty]

Greetings,

I have one last set of baseline cleanup changes extracted from the
Async Monitor Deflation project (JDK-8153224):

     JDK-8225453 is_busy diagnostics and other baseline cleanups from Async
                 Monitor Deflation project
     https://bugs.openjdk.java.net/browse/JDK-8225453

Please see the bug report for a detailed description of the changes.

Here's the webrev URL:

http://cr.openjdk.java.net/~dcubed/8225453-webrev/0-for-jdk-jdk13/

The webrev is relative to jdk-13+24 and I'm hoping to get this fix
into jdk/jdk this week for the last snapshot before the JDK13 fork.

This fix was included in my latest round of JDK-8153324 testing which
included Mach5 Tier[1-8], my stress kit on Linux-X64 and Solaris-X64,
my Inflate2 test running in parallel with Kitchensink8H on macOSX,
Linux-X64 and Solaris-X64. I also ran the Inflate2 and Kitchensink8H
combo in parallel on the jdk-13+24 baseline + this fix on macOSX,
Linux-X64 and Solaris-X64. No regressions were observed in any of
the testing.

Thanks, in advance, for any comments, suggestions or questions.

Dan