proper argument

	* Lib/{bdb,cmd,pdb}.py: Mods by Rickard Westman: No longer barfs
	on lambda:s (outputs "<lambda>" as the function name); "a(rgs)" in
	pdb now works; help messages added to pdb (lifted from pdb.doc).
	Also, "h pdb" calls pdb.help().  cmd.do_help() displays topics on
	a nicer way (I think).  Also, topics for which there is a help_
	method, but no do_method (like "pdb" above) are displayed in a
	special way.  My own mod: fix break on function to also support
	methods.