getSize(): loadmail.py really wants a functional getSize() method, so

here's a semi-kludgey one.  It returns the size of the zodb_pickles
table in bytes.

lib/python/BDBStorage/Autopack.py

@@ -14,9 +14,10 @@
 
 """An autopacking Berkeley storage without undo and versioning.
 """
-__version__ = '$Revision: 1.2 $'.split()[-2:][0]
+__version__ = '$Revision: 1.3 $'.split()[-2:][0]
 
 import sys
+import os
 import struct
 import time
 
@@ -206,6 +207,11 @@ class Autopack(BerkeleyBase):
     def iterator(self):
         raise NotImplementedError
 
+    def getSize(self):
+        # Return the size of the pickles table as a rough estimate
+        filename = os.path.join(self._env.db_home, 'zodb_pickles')
+        return os.path.getsize(filename)
+
     # Not part of the storage API
 
     def autopack(self):