RFR: 8283103: compiler/vectorapi/TestMaskedMacroLogicVector.java failed due to incorrect os.simpleArch on some platforms [v2]

[Ao Qi]

> `os.simpleArch` is not set correctly on some platforms, for example on loongarch64 and mips64 ([CODETOOLS-7903120](https://bugs.openjdk.java.net/browse/CODETOOLS-7903120)). This issue aims to let the test work on these platforms.

Ao Qi has updated the pull request incrementally with one additional commit since the last revision:

  use vm.cpu.features

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7809/files
  - new: https://git.openjdk.java.net/jdk/pull/7809/files/30409bb1..bb4387ba

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7809&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7809&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7809.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7809/head:pull/7809

PR: https://git.openjdk.java.net/jdk/pull/7809