RFR: 8310053: VarHandle and slice handle derived from layout are lacking alignment check [v4]

[Jorn Vernee]

> Add missing alignment checks for the alignment constraint of the root layout of a VarHandle created through `MemoryLayout::varHandle` and a MethodHandle `MemoryLayout::sliceHandle`.
> 
> Testing: `jdk_foreign` test suite

Jorn Vernee has updated the pull request incrementally with one additional commit since the last revision:

  Drop alignment checks from accessed elements
  Use expectThrows

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Changes:
  - all: https://git.openjdk.org/jdk/pull/14475/files
  - new: https://git.openjdk.org/jdk/pull/14475/files/668e9c37..99076262

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14475&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14475&range=02-03

  Stats: 31 lines in 2 files changed: 13 ins; 4 del; 14 mod
  Patch: https://git.openjdk.org/jdk/pull/14475.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14475/head:pull/14475

PR: https://git.openjdk.org/jdk/pull/14475