RFR: 8344880: AArch64: Add compile time check for class offsets

[Chad Rakoczy]

[JDK-8344880](https://bugs.openjdk.org/browse/JDK-8344880)

Adds compile time checks for str/ldr instructions to verify that the immediate offset will fit. This adds static_assert for constant offsets that are checked at compile time. The macro offset_of is not constexpr so instead the class size is checked. If the size of a class fits into a memory instructions then any offset in it will fit.

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Commit messages:
 - Fix whitespace
 - Add compile time check for ldr/str

Changes: https://git.openjdk.org/jdk/pull/22623/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22623&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8344880
  Stats: 345 lines in 24 files changed: 32 ins; 1 del; 312 mod
  Patch: https://git.openjdk.org/jdk/pull/22623.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22623/head:pull/22623

PR: https://git.openjdk.org/jdk/pull/22623