* TODO: Remove item about adding general multi-threaded stuff;

	* TODO: Remove item about adding general multi-threaded stuff;
	this is done.
	Remove item about specifying arbitrary locations of stack frames
	(this works on some machines).
	Remove item about debugging functions without a frame pointer
	(this works on some machines).
	Remove item about re-writing macros which handle frame chaining and
	frameless functions.  They have been re-written at least once
	since that item was written.
	Remove item about gdb catching SIGINT when attached; this is done.
	Remove item about having list_command not read symbols--why bother?