[skara] RFR: pr: handle exceptions for commit commands [v3]

[Erik Helin]

> Hi all,
> 
> please review this patch that properly handles `RuntimeException`s thrown by commit commands.
> 
> Testing:
> - [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:

  Use ConcurrentHashMap instead of HashSet

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

Changes:
  - all: https://git.openjdk.java.net/skara/pull/1017/files
  - new: https://git.openjdk.java.net/skara/pull/1017/files/1fe92740..aa65a546

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=skara&pr=1017&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=skara&pr=1017&range=01-02

  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/skara/pull/1017.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/1017/head:pull/1017

PR: https://git.openjdk.java.net/skara/pull/1017