RFR: 8254862: lldb in devkit doesn't work

[Erik Joelsson]

This patch adds the lldb framework to the macosx devkit to make it possible to run the lldb debugger.

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Commit messages:
 - Add lldb to macosx devkit

Changes: https://git.openjdk.java.net/jdk/pull/711/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=711&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8254862
  Stats: 2 lines in 2 files changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/711.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/711/head:pull/711

PR: https://git.openjdk.java.net/jdk/pull/711