Added text makes `C-h b' wider than 70 chars

[Drew Adams]

In some cases with `C-h b' I see a binding that lists the command name
followed by this text: " (binding currently shadowed)".  In many
cases, this makes the line too long (> 70 chars).

This is a minor bug, but it would probably be better to use just
"  (currently shadowed)".

Better yet, to fix this for all cases, would be to put the added text
on the next line (indented to be aligned with the command name).

In GNU Emacs 22.0.50.1 (i386-mingw-nt5.1.2600)
 of 2005-06-26 on NONIQPC
X server 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'