need progress message for customize-apropos (enhancement request)

[Drew Adams]

Try customize-apropos . RET

This will obviously take a while, as it opens a custom buffer with all
options.

After the message "Creating customization items..." is finished, the rest of
the wait is much longer than the period in which that message is displayed.
However, no message is displayed during this period - there is no visible
feedback to indicate that anything is happening.

There should be a progress message during this period as well - "Formatting
page..." or some such.

In GNU Emacs 21.3.50.1 (i386-mingw-nt5.1.2600)
 of 2005-01-30 on NONIQPC
Distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc
(3.3) --cflags -I../../jpeg-6b-3/include -I../../libpng-1.2.8/include -I../.
./tiff-3.6.1-2/include -I../../xpm-nox-4.2.0/include -I../../zlib-1.2.2/incl
ude'