[jdk15u-dev] RFR: 8257633: Missing -mmacosx-version-min=X flag when linking libjvm

[Vladimir Kempik]

After the patch applied, minos version for libjvm.dylib is on par with other libraries
Applies almost clean, only context code difference in patch.

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Commit messages:
 - Backport 51d325e613bfcf7f8016ba6d8b146afec6f0f85c

Changes: https://git.openjdk.java.net/jdk15u-dev/pull/37/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk15u-dev&pr=37&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8257633
  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk15u-dev/pull/37.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk15u-dev pull/37/head:pull/37

PR: https://git.openjdk.java.net/jdk15u-dev/pull/37