RFR: 8370254: Add VM_MEMORY_JAVA mmap tag to MacOS mmap calls

[Nityanand Rai]

Add VM_MEMORY_JAVA tag to mmap calls in os_bsd.cpp for better memory tracking of java process on macOs

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Commit messages:
 - remove extra whitespace
 - remove extra whitespace
 - Merge branch 'openjdk:master' into macos-vm-tagging
 - Covered ZGC direct mmap usage for JAVA tagging. Added unit test to validate changes
 - Merge branch 'openjdk:master' into macos-vm-tagging
 - Merge branch 'openjdk:master' into macos-vm-tagging
 - Merge branch 'openjdk:master' into macos-vm-tagging
 - Add VM_MEMORY_JAVA tag to mmap calls in os_bsd.cpp for better memory tracking

Changes: https://git.openjdk.org/jdk/pull/27868/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27868&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8370254
  Stats: 150 lines in 3 files changed: 148 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/27868.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27868/head:pull/27868

PR: https://git.openjdk.org/jdk/pull/27868