RFR: 8338017: Add AOT command-line flag aliases [v2]

[Ioi Lam]

> This is the 1st PR for [JEP 483: Ahead-of-Time Class Loading & Linking](https://bugs.openjdk.org/browse/JDK-8315737).
> 
> Add the following command-line options as specified in JEP 483:
> 
> 
> - `-XX:AOTMode=off/record/create/auto/on`
> - `-XX:AOTConfiguration=<file>.aotconfig`
> - `-XX:AOTCache=<file>.aot`
> 
> These options are implemented as aliases to existing command-line flags such as `-Xshare:dump`, `-XX:SharedArchiveFile`, `-XX:DumpLoadedClassesList`, etc.
> 
> Please see the CSR (TODO) for detailed specification.
> 
> -----
> See [here](https://bugs.openjdk.org/browse/JDK-8315737) for the sequence of dependent RFEs for implementing JEP 483.

Ioi Lam has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains five additional commits since the last revision:

 - Fixed copyright dates
 - Merge branch 'master' of https://github.com/openjdk/jdk into jep-483-step-01-8338017-add-aot-command-line-aliases
 - Merge branch 'master' into jep-483-step-01-8338017-add-aot-command-line-aliases
 - Fixed whitespaces
 - 8338017: Add AOT command-line flag aliases

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/20516/files
  - new: https://git.openjdk.org/jdk/pull/20516/files/4f06fe70..1fd5b154

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20516&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20516&range=00-01

  Stats: 55003 lines in 1635 files changed: 31975 ins; 15386 del; 7642 mod
  Patch: https://git.openjdk.org/jdk/pull/20516.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20516/head:pull/20516

PR: https://git.openjdk.org/jdk/pull/20516