[crac] RFR: Report checkpoint processing to jcmd [v13]

[Ilarion Nakonechnyy]

> pass output stream from diagnosticCommand.cpp through java code into os_linux.cpp::VM_crac::doit()

Ilarion Nakonechnyy has updated the pull request incrementally with one additional commit since the last revision:

  re-arranged sources files

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Changes:
  - all: https://git.openjdk.org/crac/pull/10/files
  - new: https://git.openjdk.org/crac/pull/10/files/4c806fca..59028cb0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=crac&pr=10&range=12
 - incr: https://webrevs.openjdk.org/?repo=crac&pr=10&range=11-12

  Stats: 159 lines in 6 files changed: 95 ins; 55 del; 9 mod
  Patch: https://git.openjdk.org/crac/pull/10.diff
  Fetch: git fetch https://git.openjdk.org/crac pull/10/head:pull/10

PR: https://git.openjdk.org/crac/pull/10