ERP5Type: add AccessControl.users.BasicUser.getIdOrUserName().

In ERP5User, getId() is the identifier, but for SpeicalUser, like
Anonymous User, System Processes etc., getId() is None.

product/ERP5Type/ZopePatch.py

@@ -87,6 +87,7 @@ from Products.ERP5Type.patches import CMFCoreUtils
 from Products.ERP5Type.patches import ZopePageTemplate
 from Products.ERP5Type.patches import ZSQLMethod
 from Products.ERP5Type.patches import MimetypesRegistry
+from Products.ERP5Type.patches import users
 
 # These symbols are required for backward compatibility
 from Products.ERP5Type.patches.PropertyManager import ERP5PropertyManager

product/ERP5Type/patches/users.py

+from AccessControl.users import BasicUser
+if True:
+    def getIdOrUserName(self):
+        return self.getId() or self.getUserName()
+
+    BasicUser.getIdOrUserName = getIdOrUserName