RFR: Add path independence

Mon Sep 5 19:46:00 UTC 2022

On Wed, 31 Aug 2022 07:15:33 GMT, Per Minborg <duke at openjdk.org> wrote:

> This small PR incorporated feedback from the original PR: https://github.com/openjdk/jextract/pull/66 made after it was integrated.

LGTM!

It is tempting to get fancy and implement everything needed to simultaneously support Linux and MacOS but the result would obscure the clarity of the sample so I agree to keep it simple.

(I am an [OpenJDK Panama](https://openjdk.org/census#mduigou) committer but have been inactive for 8+ years on the project so defer to more active contributors for approval).

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PR: https://git.openjdk.org/jextract/pull/68