[Rev 01] RFR: 222: Implement backport issue creation

[Robin Westberg]

> Hi all,
> 
> Please review this initial implementation of updating the fixVersion of issues (possibly creating a backport issue) when they are resolved by a commit, following the existing rules of the current hg updater.
> 
> Best regards,
> Robin

The pull request has been updated with 1 additional commit.

-------------

Added commits:
 - 36231cc0: Fix missing import

Changes:
  - all: https://git.openjdk.java.net/skara/pull/346/files
  - new: https://git.openjdk.java.net/skara/pull/346/files/fa409811..36231cc0

Webrevs:
 - full: https://webrevs.openjdk.java.net/skara/346/webrev.01
 - incr: https://webrevs.openjdk.java.net/skara/346/webrev.00-01

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/skara/pull/346.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/346/head:pull/346

PR: https://git.openjdk.java.net/skara/pull/346