bug#24977: 25.1; search and query-replace in Dired

[Drew Adams]

Sorry, this part of the bug report was not relevant (the
old commands are also not incremental):

 "The new commands are not incremental.  You cannot change
  the search patterns on the fly.  Nor can you add and
  remove filter predicates on the fly."

---

BTW: The correspondence between the key for `dired-do-search'
(`A') and the keys for incremental search has been lost.

An effort was made to give the Isearch key bindings for
Dired the same mnemonic as that for `dired-do-search': `a'
for `A' (`M-s' is the Isearch prefix).

 dired-do-search          A
 dired-do-isearch         M-s a C-s
 dired-do-isearch-regexp  M-s a C-M-s