[PATCH] use add_setshow_auto_boolean_cmd for 'always-inserted' and 'displaced-stepping'.

[Tom Tromey]

>>>>> "Yao" == Yao Qi <yao@codesourcery.com> writes:

Yao> I happen to see that command 'always-inserted' and
Yao> 'displaced-stepping' are added by add_setshow_enum_cmd, however, it
Yao> is more simple to use add_setshow_auto_boolean_cmd for them.  This
Yao> is what this patch tries to do.

Yao> It is obvious, and I'll check it in in two days.

Nice.

Tom