RFR: Requesting a change [v3]

[Jesper Wilhelmsson]

> Advice for people who would like to request an OpenJDK change to be implemented or backported.
> Also added a note about having more than one noreg-label.
> HotSpot issues in JBS must have a Subcomponent set.

Jesper Wilhelmsson has updated the pull request incrementally with one additional commit since the last revision:

  Require subcomponent in hotspot

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

Changes:
  - all: https://git.openjdk.org/guide/pull/155/files
  - new: https://git.openjdk.org/guide/pull/155/files/94193431..d22ebb0b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=guide&pr=155&range=02
 - incr: https://webrevs.openjdk.org/?repo=guide&pr=155&range=01-02

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/guide/pull/155.diff
  Fetch: git fetch https://git.openjdk.org/guide.git pull/155/head:pull/155

PR: https://git.openjdk.org/guide/pull/155