RFR: JDK-8261839: Error creating runtime package on macos without mac-pack…

[Andy Herrick]

…age-identifier

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Commit messages:
 - JDK-8261839: Error creating runtime package on macos without mac-package-identifier

Changes: https://git.openjdk.java.net/jdk/pull/2730/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2730&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8261839
  Stats: 24 lines in 4 files changed: 8 ins; 5 del; 11 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2730.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2730/head:pull/2730

PR: https://git.openjdk.java.net/jdk/pull/2730