Optimize updates of issue's shared versions.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3137 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/project.rb

@@ -304,7 +304,7 @@ class Project < ActiveRecord::Base
         # move_to_child_of adds the project in last (ie.right) position
         move_to_child_of(p)
       end
-      Issue.update_fixed_versions_from_sharing_change
+      Issue.update_versions_from_hierarchy_change(self)
       true
     else
       # Can not move to the given target