fix test failure (#13405)

<pre>
  1) Failure:
test_scan_changesets_for_issue_ids(RepositoryTest) [/xxx/test/unit/repository_test.rb:214]:
<"Applied in changeset r2."> expected but was
<"Applied in changeset commit:691322a8eb01e11fd7.">.
</pre>

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11672 e93f8b46-1217-0410-a6f0-8f06a7374b81
add test to ensure language name is UTF-8 (#12475)

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11673 e93f8b46-1217-0410-a6f0-8f06a7374b81