RFR: 8269022: Put evacuation failure string directly into gc=info log message

[Thomas Schatzl]

Hi all,

  can I have reviews for this change that puts the evacuation failure marker from a separate log line into the GC timing message. I.e. instead of


Pause Young (Normal) (G1 Evacuation Pause)
To-space exhausted

into


Pause Young (Normal) (Evacuation Failure) (G1 Evacuation Pause) 


This is imho easier to read, better to process and less wasteful with log space.

Testing: tier1, gc/g1 tests

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Commit messages:
 - Initial implementation

Changes: https://git.openjdk.java.net/jdk/pull/4539/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4539&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8269022
  Stats: 142 lines in 4 files changed: 116 ins; 24 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4539.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4539/head:pull/4539

PR: https://git.openjdk.java.net/jdk/pull/4539