pdb.py, bdb.py, cmd.py: use __init__() instead of init()
diff --git a/Lib/cmd.py b/Lib/cmd.py
index 7c512de..c4a347d 100644
--- a/Lib/cmd.py
+++ b/Lib/cmd.py
@@ -14,7 +14,7 @@
 		self.identchars = IDENTCHARS
 		self.lastcmd = ''
 	
-	def init(self):
+	def init(self):			# BW compat only
 		return self
 
 	def cmdloop(self):