Merge branch 'spec_popen_fix_1.9.3' into 'master'

Fix spec failure in Ruby 1.9.3

spec/gitlab_projects_spec.rb

@@ -332,6 +332,6 @@ describe GitlabProjects do
   end
 
   def capture_in_tmp_repo(cmd)
-    IO.popen(cmd, chdir: tmp_repo_path).read.strip
+    IO.popen([*cmd, {chdir: tmp_repo_path}]).read.strip
   end
 end