RFR: 8340205: Native linker allows MemoryLayout consisting of only PaddingLayout [v15]

[Per Minborg]

> This PR prevents sequence layout with padding to be used with the Linker.

Per Minborg 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 33 additional commits since the last revision:

 - Merge branch 'master' into linker-padding-layout-only
 - Update after comments
 - Merge branch 'master' into linker-padding-layout-only
 - Simplify exception testing
 - Merge branch 'master' into linker-padding-layout-only
 - Remove redundant check
 - Rephrase doc
 - Improve language
 - Add checks of exception messages
 - Update test/jdk/java/foreign/TestLinker.java
   
   Co-authored-by: Jorn Vernee <JornVernee at users.noreply.github.com>
 - ... and 23 more: https://git.openjdk.org/jdk/compare/75a052c9...97f8da66

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/21041/files
  - new: https://git.openjdk.org/jdk/pull/21041/files/786b1737..97f8da66

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21041&range=14
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21041&range=13-14

  Stats: 81811 lines in 2251 files changed: 9940 ins; 66399 del; 5472 mod
  Patch: https://git.openjdk.org/jdk/pull/21041.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21041/head:pull/21041

PR: https://git.openjdk.org/jdk/pull/21041