* lisp/replace.el (query-replace-interactive): Declare obsolete.

* lisp/replace.el (query-replace-interactive): Declare obsolete.
(query-replace-read-from): Add the last incremental search string
to the list of default values accessible via M-n.
(map-query-replace-regexp): Use `read-regexp'.
(query-replace, query-replace-regexp, query-replace-regexp-eval)
(map-query-replace-regexp, replace-string, replace-regexp):
Fix docstrings to replace mentions of `query-replace-interactive'
with alternatives.