RFR: 8261966: macOS M1: report in hs_err log if we are running x86 code in emulation mode (Rosetta) [v3]

[Gerard Ziemski]

> Please review this simple enhancement where we indicate in hs_err log file whether the CPU is being emulated. Right now the only use case is for Apple's M1 aarch64 running x64 code, i.e. "Rosetta" emulation.
> 
> This enhancement will insert `(EMULATED)` label after we print host CPU type, ex:
> 
> `Host: Oracles-MacBook-Pro-16.local, MacBookPro16,1 x86_64 2600 MHz (EMULATED), 12 cores, 32G, Darwin 19.6.0, macOS 10.15.7 (19H114)`
> 
> and
> 
> `CPU: (EMULATED) total 8 (initial active 8) (1 cores per cpu, 1 threads per core) family 6 model 44 stepping 0 microcode 0x0, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1, sse4.2, popcnt, aes, clmul, tsc, tscinvbit, tscinv, clflush`

Gerard Ziemski has updated the pull request incrementally with one additional commit since the last revision:

  move the (EMULATED) label right next to the architecture name in the HOST section

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3077/files
  - new: https://git.openjdk.java.net/jdk/pull/3077/files/870fb0a6..ba76a81f

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3077&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3077&range=01-02

  Stats: 15 lines in 2 files changed: 6 ins; 6 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3077.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3077/head:pull/3077

PR: https://git.openjdk.java.net/jdk/pull/3077