bug#18215: 24.4.50; OSX 10.6.8; set-frame-size by pixelwise does not work following `make-fame`.

[martin rudalics]

> The patch you provided did indeed fix the problem -- both examples mentioned 
in the initial bug report now work with the patched build of Emacs Trunk from 
August 8, 2014.
>
> I should mention that there is a slight difference between the June 1, 2014 
build and the patched build of August 8, 2014.  The difference is about six (6) 
pixels in frame width.  With the June 1, 2014 build, I use 1894 to exactly fill 
the screen that is 1920 pixels wide.  With the patched build of August 8, 2014, I 
would now need to use 1900 to exactly fill that same screen which is 1920 pixels 
wide.  `(frame-pixel-width)` returns 1920 with the patched build following 
(set-frame-size (selected-frame) 1900 1054 t).

Can you please in _both_ builds (that from June and the present one)
evaluate

(window--dump-frame)

and post the contents of the buffer *window-frame-dump* for both builds
here.  And please keep the CC for 18215@debbugs.gnu.org.

Thanks, martin