RFR: JDK-8310061: Note if implicit annotation processing is being used [v4]

[Joe Darcy]

> Emit a note warning of the possibility of changing the implicit running of annotation processors in a future release.

Joe Darcy has updated the pull request incrementally with one additional commit since the last revision:

  Expand cases where an annotation processor path is detected.

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/14499/files
  - new: https://git.openjdk.org/jdk/pull/14499/files/22cd7da9..f3981ee7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14499&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14499&range=02-03

  Stats: 21 lines in 3 files changed: 17 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/14499.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14499/head:pull/14499

PR: https://git.openjdk.org/jdk/pull/14499