bug#16028: 24.3.50; Latest build completely breaks my thumnail frames code

[Drew Adams]

> > Should be fixed now with revision 115383 on trunk.
> 
> Excellent - I'll give it a try.

Unfortunately, it doesn't help.  Exactly the same broken
behavior, I'm afraid.

I tested using this build from Juanma:

In GNU Emacs 24.3.50.1 (i686-pc-mingw32)
 of 2013-12-05 on ODIEONE
Bzr revision: 115389 monnier@iro.umontreal.ca-20131205202554-1az0dm7bdk303bgw
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
 `configure --prefix=/c/Devel/emacs/binary --enable-checking=yes,glyphs
 'CFLAGS=-O0 -g3' CPPFLAGS=-Ic:/Devel/emacs/include
 LDFLAGS=-Lc:/Devel/emacs/lib'