Subject: 25.0.50; (elisp) `Tool Bar': Add xref to doc for image specifications

From: Drew Adams <[email-masked]>
Date: Thu, 29 Jan 2015 08:39:35 -0800 (PST)

The doc here describes `:image' in terms of "image specifications".
It should cross-reference the part of the manual that describes the
latter.  Otherwise, there is no way to understand what IMAGE means
in `:image IMAGE'.

Also, there is a typo:

   `:image IMAGE'
      IMAGES is either...

IMAGE or IMAGES?

In GNU Emacs 25.0.50.1 (i686-pc-mingw32)
 of 2014-10-20 on LEG570
Bzr revision: 118168 [email-masked]
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
 `configure --enable-checking=yes,glyphs CPPFLAGS=-DGLYPH_DEBUG=1'