[jdk11u-dev] RFR: 8234930: Use MAP_JIT when allocating pages for code cache on macOS

[Vladimir Kempik]

Hello, here is alternative backport of 8234930 to jdk11u.
Very minimalistic change for platforms other than macos, just one one (mostly) unused argument.
We have used this patch in zulu11 for more than a year now and found no issues with it on macos and other platforms.

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Commit messages:
- 8234930: Use MAP_JIT when allocating pages for code cache on macOS

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/710/files
Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=710&range=00
Issue: https://bugs.openjdk.java.net/browse/JDK-8234930
Stats: 68 lines in 16 files changed: 27 ins; 0 del; 41 mod
Patch: https://git.openjdk.java.net/jdk11u-dev/pull/710.diff
Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/710/head:pull/710

PR: https://git.openjdk.java.net/jdk11u-dev/pull/710