bug#5339: 23.1.91; frame width not updated for fullscreen frames when turning on/off scroll bars

[YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>]

In relation to Bug#5268 (23.1.90; # of rows/columns not adjusted by
change of internal-border-width for fullscreen frames), I found that
change of vertical-scroll-bars does not update the frame parameter
`width' for full screen frames.  The value of (window-width) and
appearances look correct, though.

Steps to reproduce:

   1. emacs -Q
   2. (set-frame-parameter nil 'fullscreen 'fullboth) C-j
   3. (cons (frame-width) (window-width)) C-j
      => (176 . 176)
   4. (scroll-bar-mode) C-j
   5. (cons (frame-width) (window-width)) C-j
      => (176 . 179)

				     YAMAMOTO Mitsuharu
				mituharu@math.s.chiba-u.ac.jp

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
For information about debugging Emacs, please read the file
/usr/local/share/emacs/23.1.91/etc/DEBUG.


In GNU Emacs 23.1.91.1 (i686-pc-linux-gnu, GTK+ Version 2.18.3)
 of 2010-01-07 on mituharu-laptop
Windowing system distributor `The X.Org Foundation', version 11.0.10604000
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: ja_JP.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-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
  blink-cursor-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <menu-bar> 
<help-menu> <send-emacs-bug-report>

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