RFR: 8368781: PerfMemory - make issues more transparent [v7]

[Matthias Baesken]

> Currently issues with perfMemory like problems with the secure tmp subdirectory creation are not very transparent in release JVMs.
> 
> There exists some warnings traces but they are behind develop flags like Verbose so only available in debug JVMs.
> We could (in case of issues) store some information and write it later into hsinfo/hserr files ; or make the existing warnings available too in release JVMs.

Matthias Baesken has updated the pull request incrementally with two additional commits since the last revision:

 - Reformatting suggested by David
 - unneeded \ removed

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/27602/files
  - new: https://git.openjdk.org/jdk/pull/27602/files/f0f4e57c..27a4ad6d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27602&range=06
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27602&range=05-06

  Stats: 30 lines in 3 files changed: 0 ins; 7 del; 23 mod
  Patch: https://git.openjdk.org/jdk/pull/27602.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27602/head:pull/27602

PR: https://git.openjdk.org/jdk/pull/27602