[jdk13u-dev] RFR: 8257988: Remove JNF dependency from libsaproc/MacosxDebuggerLocal.m

[Vladimir Kempik]

Almost clean backport from 15u to 13u ( 17 to 15u was clean)
one gmk file renaming and context code difference

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Commit messages:
 - 8257988: Remove JNF dependency from libsaproc/MacosxDebuggerLocal.m

Changes: https://git.openjdk.java.net/jdk13u-dev/pull/179/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk13u-dev&pr=179&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/jdk13u-dev/pull/179.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk13u-dev pull/179/head:pull/179

PR: https://git.openjdk.java.net/jdk13u-dev/pull/179