RFR: 8297729: Replace GrowableArray in ComputeMoveOrder with hash table [v4]

[Jorn Vernee]

> Replaces the GrowableArray 'table' in ComputeMoveOrder with a real hash table.
> 
> Through testing, I found that sometimes this array is blown up to several thousand elements, most of which are `NULL`. Using a hash table prevents this large wastage.
> 
> I've touched up some of the surrounding code as well. Mostly style changes, but I've also removed the `BasicType` field from the `Move` and `MoveOperation` structs, since it was unused, and added frame data storages to the fast path for stack args as well, since both are allocated on the stack.
> 
> Testing: `jdk_foreign` test suite.

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

  Use specialized equals function

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/11392/files
  - new: https://git.openjdk.org/jdk/pull/11392/files/40e66a7c..22ae2770

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=11392&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=11392&range=02-03

  Stats: 10 lines in 1 file changed: 6 ins; 3 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/11392.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11392/head:pull/11392

PR: https://git.openjdk.org/jdk/pull/11392