* RelLib/_*.py: Make objects serialize all the way down to built-in

python objects, so that Gramps classes are never pickled.
* Date.py, CalSdn.py: Move to RelLib.
* src/dates/Date_*.py: Use new Date.
* src/plugins/*.py: Use new Date.
* src/GrampsDb/_*.py: Use new Date, new unserialize.
* src/*.py: Use new Date.


svn: r5875

src/RelLib/_Url.py

@@ -1,7 +1,7 @@
 #
 # Gramps - a GTK+/GNOME based genealogy program
 #
-# Copyright (C) 2000-2005  Donald N. Allingham
+# Copyright (C) 2000-2006  Donald N. Allingham
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -68,6 +68,13 @@ class Url(BaseObject,PrivacyBase):
             self.desc = ""
             self.type = (Url.CUSTOM,"")
 
+    def serialize(self):
+        return (self.private,self.path,self.desc,self.type)
+
+    def unserialize(self,data):
+        (self.private,self.path,self.desc,self.type) = data
+        return self
+
     def get_text_data_list(self):
         """
         Returns the list of all textual attributes of the object.