RFR: 8257424: Add setName() to RecordingStream [v2]

[Yasumasa Suenaga]

> `RecordingStream` will start new flight recording to gather events. It has some of methods which are equivalent to `Recording`, but we cannot set recording name.
> 
> If we can specify the name for `RecordingStream`, it is useful to distinguish recordings by JFR.check dcmd.

Yasumasa Suenaga has updated the pull request incrementally with one additional commit since the last revision:

  Set name to RecordingStream

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/1520/files
  - new: https://git.openjdk.java.net/jdk/pull/1520/files/4155bf40..35d85afd

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=1520&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=1520&range=00-01

  Stats: 132 lines in 3 files changed: 61 ins; 71 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1520.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1520/head:pull/1520

PR: https://git.openjdk.java.net/jdk/pull/1520