bug#21092: 25.0.50; Option `lazy-highlight-max-at-a-time' does not work

[Drew Adams]

1. emacs -Q

2. Visit a file - anything other than a tiny one will do.

3. Use `customize-option' to set `lazy-highlight-cleanup' to nil
   and set `lazy-max-at-a-time' to nil.

4. Search once for a simple string that occurs multiple times throughout
   the buffer - e.g., `C-s the RET`.

5. Scroll down to see that the matches were not highlighted throughout
   the buffer.  `lazy-highlight-max-at-a-time' does not work as
   advertised.


In GNU Emacs 25.0.50.1 (i686-pc-mingw32)
 of 2015-07-03 on LEG570
Bzr revision: 2b848fadd51e805b2f46da64c5958ea7f009048a
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
 `configure --host=i686-pc-mingw32 --enable-checking=yes,glyphs'