RFR: 8257988: Remove JNF dependency from libsaproc/MacosxDebuggerLocal.m

[Phil Race]

On Fri, 29 Jan 2021 17:22:49 GMT, Phil Race <prr at openjdk.org> wrote:

>> Build changes look good.
>
>> Is it because they are not in a place that can be accessed from this file?
> Right 99% of JNF usage was the desktop module many, many files, 1300 references .. the entire rest of the JDK had just 3 files each in a different module ! It did not seem worth creating a JDK-wide platform-specific library to support this.

> For testing you want test/jdk/sun/tools/jhsdb/ and test/hotspot/jtreg/serviceability/sa

These tests passed with my changes

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PR: https://git.openjdk.java.net/jdk/pull/2304