[Rev 01] RFR: Improve merge bot commit message

[Jorn Vernee]

> The current commit message the merge bot uses just says
> 
>> Merge
> 
> I'd like it if the message contained the branches involved as well, to be a little more informative.

The pull request has been updated with 1 additional commit.

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

Added commits:
 - 17e49484: Update tests as well

Changes:
  - all: https://git.openjdk.java.net/skara/pull/400/files
  - new: https://git.openjdk.java.net/skara/pull/400/files/610082af..17e49484

Webrevs:
 - full: https://webrevs.openjdk.java.net/skara/400/webrev.01
 - incr: https://webrevs.openjdk.java.net/skara/400/webrev.00-01

  Stats: 6 lines in 1 file changed: 0 ins; 0 del; 6 mod
  Patch: https://git.openjdk.java.net/skara/pull/400.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/400/head:pull/400

PR: https://git.openjdk.java.net/skara/pull/400