Adds a setting to allow subtasks to belong to other projects (#5487).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@10587 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/settings/_issues.html.erb

@@ -3,6 +3,8 @@
 <div class="box tabular settings">
 <p><%= setting_check_box :cross_project_issue_relations %></p>
 
+<p><%= setting_select :cross_project_subtasks, cross_project_subtasks_options %></p>
+
 <p><%= setting_check_box :issue_group_assignment %></p>
 
 <p><%= setting_check_box :default_issue_start_date_to_creation_date %></p>