RFR: 8264774: Implementation of Foreign Function and Memory API (Incubator) [v24]

[Maurizio Cimadamore]

> This PR contains the API and implementation changes for JEP-412 [1]. A more detailed description of such changes, to avoid repetitions during the review process, is included as a separate comment.
> 
> [1] - https://openjdk.java.net/jeps/412

Maurizio Cimadamore 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 35 additional commits since the last revision:

 - Add sealed modifiers in morally sealed API interfaces
 - Merge branch 'master' into JEP-412
 - Fix VaList test
   Remove unused code in Utils
 - Merge pull request #11 from JornVernee/JEP-412-MXCSR
   
   Add MXCSR save and restore to upcall stubs for non-windows platforms
 - Add MXCSR save and restore to upcall stubs for non-windows platforms
 - Merge branch 'master' into JEP-412
 - Fix issue with bounded arena allocator
 - Rename is_entry_blob to is_optimized_entry_blob
   Rename as_entry_blob to as_optimized_entry_blob
   Fix misc typos and indentation issues
 - Take care of remaining references to "Panama"
 - * Replace is_panama_entry_frame() with is_optimized_entry_frame()
   * Replace EntryBlob with OptimizedEntryBlob
 - ... and 25 more: https://git.openjdk.java.net/jdk/compare/788875f9...e927c235

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3699/files
  - new: https://git.openjdk.java.net/jdk/pull/3699/files/f5668ffc..e927c235

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3699&range=23
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3699&range=22-23

  Stats: 7087 lines in 360 files changed: 4302 ins; 1796 del; 989 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3699.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3699/head:pull/3699

PR: https://git.openjdk.java.net/jdk/pull/3699