RFR: skara-840

[Erik Helin]

Hi all,

please review this patch that ensures that backport pull requests always have a correct title. In other words, don't assume that old(er) commits have correct commit message titles, fetch the data from JBS instead.

Testing:
- [x] Added a new unit test

Thanks,
Erik

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Commit messages:
 - skara-840

Changes: https://git.openjdk.java.net/skara/pull/981/files
 Webrev: https://webrevs.openjdk.java.net/?repo=skara&pr=981&range=00
  Stats: 110 lines in 2 files changed: 109 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/skara/pull/981.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/981/head:pull/981

PR: https://git.openjdk.java.net/skara/pull/981