Added missing Enumeration STI exemplars.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3670 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/exemplars/document_category_exemplar.rb

+class DocumentCategory < Enumeration
+  generator_for :name, :method => :next_name
+  generator_for :type => 'DocumentCategory'
+
+  def self.next_name
+    @last_name ||= 'DocumentCategory0'
+    @last_name.succ!
+    @last_name
+  end
+end

test/exemplars/issue_priority_exemplar.rb

+class IssuePriority < Enumeration
+  generator_for :name, :method => :next_name
+  generator_for :type => 'IssuePriority'
+
+  def self.next_name
+    @last_name ||= 'IssuePriority0'
+    @last_name.succ!
+    @last_name
+  end
+end