bug#23001: emacs in X has icons missing and throws warnings in tty

[myglc2 <myglc2@gmail.com>]

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When running GuixSD on a headless server  ...

ssh
emacs

... produces emacs running in X but ...

- all of the menu icons are missing except one ('file drawers')

- lots of messages are shooting in the tty session (sample below).

This actually doesn't bother me because, hey, who uses the stinking
icons? But it is messy and <JeanLouis> on #guix reported the same thing:

VVVVVVVVVVVVVVVVVVVVVV
<JeanLouis> I was expecting if I do -i emacs -- to get binary emacs, not the
	    ony that was compiled without gdk-pixbuf incorrectly
<mark_weaver> JeanLouis: what do you mean by "that was compiled without
	      gdk-pixbuf incorrectly" ?
<JeanLouis> https://rcdrun.com/images/upload/tmp/2016-03-12-23:41:52.jpg
<JeanLouis> that is what I mean
<JeanLouis> (emacs-24-5:28561): Gdk-CRITICAL **:
	    gdk_cairo_surface_create_from_pixbuf: assertion 'GDK_IS_PIXBUF
	    (pixbuf)' failed					        [18:06]
<JeanLouis> I get many such when running it.
<JeanLouis> buttons missing
^^^^^^^^^^^^^^^^^^^^^^

Here is my setup:

M-x version:
GNU Emacs 24.5.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.18.2) of
2016-02-27 on localhost

Guix commit:
* master 81a9653 gnu: webkitgtk: Update to 2.10.8 [fixes CVE-2016-1726].

Example of the messages in the tty session:
VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
** (emacs-24-5:18164): WARNING **: Couldn't connect to accessibility bus: Failed to connect to socket /tmp/dbus-JHb3wYZmX7: Connection refused

(emacs-24-5:18164): Gtk-WARNING **: Could not find the icon 'document-new'. The 'hicolor' theme
was not found either, perhaps you need to install it.
You can get a copy from:
	http://icon-theme.freedesktop.org/releases

(emacs-24-5:18164): Gtk-WARNING **: Error loading theme icon 'document-new' for stock: Icon 'document-new' not present in theme Adwaita

(emacs-24-5:18164): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Icon 'image-missing' not present in theme Adwaita

(emacs-24-5:18164): GLib-GObject-CRITICAL **: g_object_ref: assertion 'G_IS_OBJECT (object)' failed

(emacs-24-5:18164): Gdk-CRITICAL **: gdk_cairo_surface_create_from_pixbuf: assertion 'GDK_IS_PIXBUF (pixbuf)' failed

(emacs-24-5:18164): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(emacs-24-5:18164): Gtk-WARNING **: Error loading theme icon 'document-new' for stock: Icon 'document-new' not present in theme Adwaita

(emacs-24-5:18164): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Icon 'image-missing' not present in theme Adwaita
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^


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(use-package-modules
 aspell
 gettext
 ghostscript ;; gs-fonts
 fonts ;; font-dejavu font-gnu-freefont-ttf
 base
 ssh rsync wget screen
 version-control
 emacs
 curl
 xorg certs
 graphviz
 ) 
(packages->manifest
 (list
  ;;  gnu-gettext
  gs-fonts font-dejavu font-gnu-freefont-ttf
  gnu-make
  openssh nss-certs xauth rsync wget git git-manpages
  emacs magit screen aspell aspell-dict-en
  curl ;; lpaste
  graphviz
  ))

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(use-modules (gnu))
(use-service-modules networking ssh)
(use-package-modules admin
		     disk
		     )
(operating-system
  (host-name "g1")
  (timezone "America/New_York")
  (locale "en_US.utf8")
  (bootloader (grub-configuration (device "/dev/sda")))
  (file-systems (cons (file-system
			(device "g1sd")
			(title 'label)
			(mount-point "/")
			(type "ext4"))
		      %base-file-systems))
  (users (cons* (user-account
		 (name "glc")
		 (comment "g l c")
		 (group "users")
		 (supplementary-groups '("wheel"))
		 (home-directory "/home/glc"))
		(user-account
		 (name "glc2")
		 (comment "glc2")
		 (group "users")
		 (supplementary-groups '("wheel"))
		 (home-directory "/home/glc2"))
		(user-account
		 (name "glc3")
		 (comment "glc3")
		 (group "users")
		 (supplementary-groups '("wheel"))
		 (home-directory "/home/glc3"))
		(user-account
		 (name "glc4")
		 (comment "glc4")
		 (group "users")
		 (supplementary-groups '("wheel"))
		 (home-directory "/home/glc4"))
		(user-account
		 (name "glc5")
		 (comment "glc5")
		 (group "users")
		 (supplementary-groups '("wheel"))
		 (home-directory "/home/glc5"))
		(user-account
		 (name "glc6")
		 (comment "glc6")
		 (group "users")
		 (supplementary-groups '("wheel"))
		 (home-directory "/home/glc6"))
		%base-user-accounts))
  (packages
   (cons*
    glibc-utf8-locales
    parted
    %base-packages))
  (services (cons* (dhcp-client-service)
		   (lsh-service #:port-number 22)
		   %base-services)))