Add an option in Edebug to prevent pauses after `h', 'f', and `o'.

Add an option in Edebug to prevent pauses after `h', 'f', and `o'.

Requested by Paul Pogonyshev.  Also add in documentation for Edebug config
variables which was missing.

* lisp/emacs-lisp/edebug.el (edebug-sit-on-break): New customizable option.
(edebug--display-1): Test edebug-sit-on-break before pausing 1 second.

* doc/lispref/edebug.texi (Jumping): Document the effect of the new option.
(Edebug Options): Document the new option.  Also add documentation for
edebug-eval-macro-args, edebug-print-length, edebug-print-level,
edebug-print-circle, edebug-sit-for-seconds.

* etc/NEWS: Note the new feature.