RFR: 8295419: JFR: Change name of jdk.JitRestart

[Erik Gahlin]

Could I have a review of a change to the JFR event metadata. 

The convention used by JFR events have been to use uppercase for acronyms, for example CPULoad, TLSHandshake, SystemGC, JVMInformation and ObjectAllocationInNewTLAB. The jdk.JitRestart event should follow the same convention to be consistent (jdk.JITRestart). The event has not been in a release so there is no harm in changing.

Testing: test/jdk/jdk/jfr

Thanks
Erik

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Commit messages:
 - Initial

Changes: https://git.openjdk.org/jdk/pull/10731/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10731&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8295419
  Stats: 7 lines in 6 files changed: 0 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/jdk/pull/10731.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10731/head:pull/10731

PR: https://git.openjdk.org/jdk/pull/10731