[tor-bugs] #20565 [Core Tor/Stem]: Ignore git mergetool backup files

[Tor Bug Tracker & Wiki]

#20565: Ignore git mergetool backup files
-------------------------------+--------------------
     Reporter:  cypherpunks    |      Owner:  atagar
         Type:  defect         |     Status:  new
     Priority:  Medium         |  Milestone:
    Component:  Core Tor/Stem  |    Version:
     Severity:  Normal         |   Keywords:
Actual Points:                 |  Parent ID:
       Points:                 |   Reviewer:
      Sponsor:                 |
-------------------------------+--------------------
 I use `git mergetool` to handle merge conflicts. The tool leaves `.orig`
 files as backups to the original files.

 This makes `git status` complain about untracked files and fails the
 installation unit test because it detects these files as not being
 installed.

 The attached patch solves both issues.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20565>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online