RFR: 123: Set the commit author as sender of commit notification emails

[Robin Westberg]

Hi all,

Please review this change that uses the commit author (of the last commit, in case of several) as the email author when sending a commit notification email. This can be overridden on a per-list basis if wanted.

Best regards,
Robin

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Commits:
 - ea80d334: Use last committer as the author of a notification, unless overridden on a per-list basis

Changes: https://git.openjdk.java.net/skara/pull/188/files
 Webrev: https://webrevs.openjdk.java.net/skara/188/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/SKARA-123
  Stats: 33 lines in 3 files changed: 11 ins; 7 del; 15 mod
  Patch: https://git.openjdk.java.net/skara/pull/188.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/188/head:pull/188

PR: https://git.openjdk.java.net/skara/pull/188