scm: git: use --encoding=UTF-8 in "git log" (#3396).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4964 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/lib/redmine/scm/adapters/git_adapter_test.rb

@@ -28,11 +28,11 @@ begin
       end
 
       def test_branches
-        assert_equal @adapter.branches, ['master', 'test_branch']
+        assert_equal @adapter.branches, ['master', 'test-latin-1', 'test_branch']
       end
 
       def test_getting_all_revisions
-        assert_equal 15, @adapter.revisions('',nil,nil,:all => true).length
+        assert_equal 16, @adapter.revisions('',nil,nil,:all => true).length
       end
 
       def test_getting_certain_revisions