RFR: 8344708: Compiler Implementation of Module Import Declarations [v4]

[Jan Lahoda]

> This is a patch to finalize the module imports feature. Please see:
> https://bugs.openjdk.org/browse/JDK-8344700

Jan Lahoda has updated the pull request incrementally with one additional commit since the last revision:

  Reflecting review feedback - avoiding hardcoded constants.

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/23801/files
  - new: https://git.openjdk.org/jdk/pull/23801/files/067a0444..d66703c1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=23801&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23801&range=02-03

  Stats: 19 lines in 3 files changed: 4 ins; 0 del; 15 mod
  Patch: https://git.openjdk.org/jdk/pull/23801.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23801/head:pull/23801

PR: https://git.openjdk.org/jdk/pull/23801