RFR: 7903173: jextract makefile build, test fails on macOS Monterey

[Athijegannathan Sundararajan]

passing -L /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib via LDFLAGS. With that makefile build and test on macOS Monterey works fine.

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Commit messages:
 - 7903173: jextract makefile build, test fails on macOS Monterey

Changes: https://git.openjdk.java.net/jextract/pull/27/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jextract&pr=27&range=00
  Issue: https://bugs.openjdk.java.net/browse/CODETOOLS-7903173
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jextract/pull/27.diff
  Fetch: git fetch https://git.openjdk.java.net/jextract pull/27/head:pull/27

PR: https://git.openjdk.java.net/jextract/pull/27