Merge branch 'sort-commits' into 'master'

Order result of `Repository#commits_between` by date.

Addresses internal issue https://dev.gitlab.org/gitlab/gitlabhq/issues/2421.

When this is merged, I'll release 7.2.7 and submit a MR to gitlab-ce.

Before:

![Screen_Shot_2015-07-30_at_12.26.24](https://gitlab.com/gitlab-org/gitlab_git/uploads/bc04eaf6ede9cdc590542c7d325cce31/Screen_Shot_2015-07-30_at_12.26.24.png)

After:

![Screen_Shot_2015-07-30_at_12.26.29](https://gitlab.com/gitlab-org/gitlab_git/uploads/673ff9f3a43451693146761cd3fbd0af/Screen_Shot_2015-07-30_at_12.26.29.png)

"JS fix" is from February 2014, "Feature conflcit added" is from August 2014.

See merge request !31

Author: Douwe Maan

CHANGELOG

@@ -1,4 +1,5 @@
 v 7.2.7
+  - Order result of `Repository#commits_between` by date.
   - Include branch/tag name in archive file and dirname
 
 v 7.2.6

lib/gitlab_git/repository.rb

@@ -296,12 +296,15 @@ def rev_parse_target(revspec)
       #
       def commits_between(from, to)
         walker = Rugged::Walker.new(rugged)
+        walker.sorting(Rugged::SORT_DATE | Rugged::SORT_REVERSE)
+
         walker.push(to)
         walker.hide(from)
+
         commits = walker.to_a
         walker.reset
 
-        commits.reverse
+        commits
       end
 
       # Returns the SHA of the most recent common ancestor of +from+ and +to+