Add a Maintenance Burden section with bsddb3 as its inaugural member.

pep-3108.txt

@@ -646,6 +646,23 @@ for what the module is meant for.
   + Moved to the 'collections' module.
 
 
+Maintenance Burden
+------------------
+
+Over the years, certain modules have become a heavy burden upon
+python-dev to maintain. In situations like this, it is better for the
+module to be given to the community to maintain to free python-dev to
+focus more on language support and other modules in the standard
+library that do not take up a undue amount of time and effort.
+
+* bsddb3
+
+  + Already externally maintained at
+    http://www.jcea.es/programacion/pybsddb.htm .
+  + Constant testing instability.
+  + Has consistently not been forward-ported to Python 3.0.
+
+
 Modules to Rename
 =================