bug#18727: 25.0.50; Paste to isearch-repeat-forward does not work

[Bert Sutherland <berts@amazon.com>]

1) emacs -Q <file.txt>
2) Copy some text to the Windows/Linux clipboard
    e.g. if using Putty simply highlight some text
    using the mouse
3) C-s to invoke isearch-repeat-forward
4) Pate text
    e.g. using Putty use mouse to right-click

Expected result: isearch is performed for pasted text

Actual result: text is insterted into file buffer and
    mini-buffer reports "Mark set"

Other: verified that I get the expected behavior in 24.3.1




In GNU Emacs 25.0.50.1 (x86_64-unknown-linux-gnu)
 of 2014-10-14 on berts-dp
System Description:	Ubuntu 11.04

Configured using:
 `configure --with-x-toolkit=no --with-gif=no --with-tiff=no
 --with-xpm=no --without-makeinfo'

Configured features:
JPEG PNG SOUND GSETTINGS NOTIFY GNUTLS LIBXML2 FREETYPE XFT ZLIB

Important settings:
  locale-coding-system: nil

Major mode: Change Log

Minor modes in effect:
  bug-reference-mode: t
  tooltip-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t

Recent input:
ESC [ > 0 ; 1 3 6 ; 0 c ESC x r e p o r t RET

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
ChangeLog has auto save data; consider M-x recover-this-file

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message dired format-spec
rfc822 mml easymenu mml-sec mm-decode mm-bodies mm-encode mail-parse
rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045
ietf-drums mm-util help-fns mail-prsvr mail-utils vc-git bug-reference
add-log xterm time-date tooltip electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt
fringe tabulated-list newcomment elisp-mode lisp-mode prog-mode register
page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock
font-lock syntax facemenu font-core frame cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew
greek romanian slovak czech european ethiopic indian cyrillic chinese
case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer nadvice
loaddefs button faces cus-face macroexp files text-properties overlay
sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process gfilenotify
dynamic-setting system-font-setting font-render-setting x multi-tty
emacs)

Memory information:
((conses 16 83068 5083)
 (symbols 48 18223 0)
 (miscs 40 49 125)
 (strings 32 12052 4750)
 (string-bytes 1 319125)
 (vectors 16 7930)
 (vector-slots 8 347432 27955)
 (floats 8 70 188)
 (intervals 56 262 104)
 (buffers 976 12)
 (heap 1024 26615 1170))