RFR: 8365579: ml64.exe is not the right assembler for Windows aarch64 [v4]

[Saint Wesonga]

> [ml64](https://learn.microsoft.com/en-us/cpp/assembler/masm/ml-and-ml64-command-line-reference?view=msvc-170) is set as the assembler for the Windows platform but is specific to the x64 platform. The [armasm64](https://learn.microsoft.com/en-us/cpp/assembler/arm/arm-assembler-command-line-reference?view=msvc-170) assembler should be used for Windows AArch64.
> 
> The -c and -Ta options are only valid for ml64 and -Ta can be removed from CompileFile.gmk (assembling for x64 works without it).

Saint Wesonga has updated the pull request incrementally with one additional commit since the last revision:

  Restore -Ta flag for x64 assembler

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/26791/files
  - new: https://git.openjdk.org/jdk/pull/26791/files/3470f000..42796378

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26791&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26791&range=02-03

  Stats: 7 lines in 1 file changed: 6 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/26791.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26791/head:pull/26791

PR: https://git.openjdk.org/jdk/pull/26791