(frame-configuration-to-register)

(frame-configuration-to-register)
(window-configuration-to-register): Use a marker to save point.
(point-to-register): Include point when saving a frame config.
(number-to-register): New command (was commented out).
(increment-register): New command
(view-register): Handle frame configs and window configs
included in a list with a pointer.
(view-register, insert-register): Use numberp, not integerp.