Added proxy roles to saved state.

lib/python/OFS/Document.py

 """Document object"""
 
-__version__='$Revision: 1.53 $'[11:-2]
+__version__='$Revision: 1.54 $'[11:-2]
 
 from Globals import HTML, HTMLFile, MessageDialog
 from string import join,split,strip,rfind,atoi,lower
@@ -52,7 +52,8 @@ class Document(cDocumentTemplate.cDocument, HTML, Explicit,
     ('View', ['__call__', '']),
     )
 
-    _state_name={'raw':1, 'globals':1, '__name__':1, '_vars':1}.has_key
+    _state_name={'raw':1, 'globals':1, '__name__':1, '_vars':1,
+		 '_proxy_roles'}.has_key
 
     def __getstate__(self):
 	r={}