RFR: 430: /summary command does not support multi-line summaries [v2]

[Erik Helin]

> Hi all,
> 
> please review this patch that makes the `/summary` pull request command accept multi-line summaries. As described on
> the [Skara wiki](https://wiki.openjdk.java.net/display/SKARA/Pull+Request+Commands#PullRequestCommands-/summary) the
> `/summary` command should this, since the commit message format allow for this.  Testing:
> - [x] Added a new unit test
> - [x] `make test` passes on Linux x64
> 
> Thanks,
> Erik

Erik Helin has updated the pull request incrementally with one additional commit since the last revision:

  Fix spelling
  
  Co-authored-by: Robin Westberg <robin at westberg.se>

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

Changes:
  - all: https://git.openjdk.java.net/skara/pull/678/files
  - new: https://git.openjdk.java.net/skara/pull/678/files/c0ca352e..6d612ddf

Webrevs:
 - full: https://webrevs.openjdk.java.net/skara/678/webrev.01
 - incr: https://webrevs.openjdk.java.net/skara/678/webrev.00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/skara/pull/678.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/678/head:pull/678

PR: https://git.openjdk.java.net/skara/pull/678