Merged r1505, r1506, r1511, r1512, r1517, r1518, r1524 to 1526 from trunk.

git-svn-id: http://redmine.rubyforge.org/svn/branches/0.7-stable@1532 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/repository/cvs.rb

@@ -76,7 +76,8 @@ class Repository::Cvs < Repository
         unless revision_to
           revision_to=scm.get_previous_revision(revision_from)
         end
-        diff=diff+scm.diff(change_from.path, revision_from, revision_to, type)
+        file_diff = scm.diff(change_from.path, revision_from, revision_to)
+        diff = diff + file_diff unless file_diff.nil?
       end
     end
     return diff