RFR: 8265036: JFR: Remove use of -XX:StartFlightRecording= and -XX:FlightRecorderOptions= [v2]

[Erik Gahlin]

> Hi,
> 
> Could I have a review of fix that removes the use of "=" together with -XX:StartFlightRecording and -XX:FlightRecorderOptions. It's been possible to use "-XX:StartFlightRecording:" and "-XX:FlightRecorderOption:" since JFR was introduced into OpenJDK (JDK 11), so this is not a change of the specification, just an update to make the use consistent in tests, comments, documentation etc.
> 
> I also removed the use of -XX:+FlightRecorder, which is not needed, and has been deprecated since JDK 13. 
> 
> Testing: jdk/jdk/jfr, tier 1-4.
> 
> Thanks
> Erik

Erik Gahlin has updated the pull request incrementally with one additional commit since the last revision:

  Replace '=' in jfrOptionsSet.cpp

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3561/files
  - new: https://git.openjdk.java.net/jdk/pull/3561/files/4ce08939..138bac16

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3561&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3561&range=00-01

  Stats: 7 lines in 1 file changed: 0 ins; 0 del; 7 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3561.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3561/head:pull/3561

PR: https://git.openjdk.java.net/jdk/pull/3561