[jdk15u-dev] Integrated: 8257988: Remove JNF dependency from libsaproc/MacosxDebuggerLocal.m

[Vladimir Kempik]

Clean backport, part 8/8 of JNF removal

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Commit messages:
 - Backport 2be60e37e0e433141b2e3d3e32f8e638a4888e3a

Changes: https://git.openjdk.java.net/jdk15u-dev/pull/14/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk15u-dev&pr=14&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8257988
  Stats: 45 lines in 2 files changed: 35 ins; 2 del; 8 mod
  Patch: https://git.openjdk.java.net/jdk15u-dev/pull/14.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk15u-dev pull/14/head:pull/14

PR: https://git.openjdk.java.net/jdk15u-dev/pull/14