bug#10541: 24.0.92; doc string of `customize-unsaved'

[Drew Adams]

Doc string:
 
"Customize all user options set in this session but not saved."
 
It should instead say something like this:
"Open Customize to check all faces and options currently set but not saved."
 
1. Mention faces too, not just options, which are variables.
 
2. This is not so much in order to customize as it is to check changes
that have been made during the session.  The current doc string misses
the main purpose.
 

In GNU Emacs 24.0.92.1 (i386-mingw-nt5.1.2600) of 2012-01-16 on MARVIN
 Windowing system distributor `Microsoft Corp.', version 5.1.2600
 configured using `configure --with-gcc (4.6) --no-opt --cflags
 -ID:/devel/emacs/libs/libXpm-3.5.8/include
 -ID:/devel/emacs/libs/libXpm-3.5.8/src
 -ID:/devel/emacs/libs/libpng-dev_1.4.3-1/include
 -ID:/devel/emacs/libs/zlib-dev_1.2.5-2/include
 -ID:/devel/emacs/libs/giflib-4.1.4-1/include
 -ID:/devel/emacs/libs/jpeg-6b-4/include
 -ID:/devel/emacs/libs/tiff-3.8.2-1/include
 -ID:/devel/emacs/libs/gnutls-3.0.9/include --ldflags
 -LD:/devel/emacs/libs/gnutls-3.0.9/lib'