have all modules run a shutdown() when quitting, use it to have MegaHAL close the brain

Module.py

@@ -92,6 +92,13 @@ class Module(object):
         self.server.remove_global_handler('pubmsg', self.on_pubmsg)
         self.server.remove_global_handler('privmsg', self.on_privmsg)
 
+    def shutdown(self):
+        """
+        Do pre-deletion type cleanup.
+
+        Implement this to close databases, write to disk, etc.
+        """
+
     def on_pubmsg(self, connection, event):
         """
         Handle pubmsg events. Does some variable setup and initial sanity checking before

modules/IrcAdmin.py

@@ -105,6 +105,9 @@ class IrcAdmin(Module):
     def sub_quit_irc(self, connection, event, nick, userhost, replypath, what, admin_unlocked):
         whats = what.split(' ')
 
+        for module in self.modlist:
+            module.shutdown()
+
         if replypath is not None:
             connection.privmsg(replypath, 'Quitting...')
         connection.quit(' '.join(whats[1:]))

modules/MegaHAL.py

@@ -41,6 +41,12 @@ class MegaHAL(Module):
         except NoOptionError:
             self.megahal = megahal.MegaHAL()
 
+    def shutdown(self):
+        """
+        Close the megahal brain.
+        """
+        self.megahal.close()
+
     def reload(self, connection, event, nick, userhost, replypath, what, admin_unlocked):
         """
         Broken. Don't do anything.