RFR: Requesting a change [v2]

[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.

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

  Some noreg advice

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

Changes:
  - all: https://git.openjdk.org/guide/pull/155/files
  - new: https://git.openjdk.org/guide/pull/155/files/575da2a1..94193431

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=guide&pr=155&range=01
 - incr: https://webrevs.openjdk.org/?repo=guide&pr=155&range=00-01

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 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