Add --with_dev_pkgs option to build_image.sh to pull in developer debug packages.

src/package_repo/package-list-prod.txt

 # Copyright (c) 2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This file contains the list of packages we install on the production
 # machines (ie, end users). One package per line
 
 # To read these into a line in a script, do:
 # PKGS=`cat $PACKAGE_LIST_FILE | grep -v ' *#' | grep -v '^ *$' | tr '\n' ' '`
 # change "' '" to "','" for a comma separated list
 
 # TODO: Something broke in the dependencies so we need to manually
 # ensure that we have some X input packages
 xserver-xorg-input-kbd
 xserver-xorg-input-mouse
 xserver-xorg-input-synaptics
 xserver-xorg-video-intel
 
 # xserver
 xserver-xorg
 
 # For creating tokens that allow user binaries to communicate with the xserver.
 xauth
 
+# Some things freak out if the hostname is not set.
+hostname
+
 # Newer packages of chromium-browser don't seem to have libgconf2 as
 # part of their depends, but chrome won't run without.
 libgconf2-4
 
 # DRI drivers are needed to run the clutter-based WM.
 libgl1-mesa-dri
 
-# TODO: Move into a developer addon list. These should all be
-# optional. For now, install these useful packages until things are farther
-# along in development.
-apt
-bootchart
-bsdutils
-bzip2
-diff
-gnupg  # needed by apt-get to verify signatures
-hostname
-ifupdown
-iproute
-iputils-ping
-less
-ncurses-base
-net-tools
-openssh-server
-tar
-vim-tiny
-x11-utils
-xterm
-
 # Fonts
 ttf-dejavu
 ttf-droid
 ttf-sil-abyssinica
 
 # For power events (needed specifically to trap lid-close)
 acpid
 
 # For power management (battery monitor)
 devicekit-power
@@ skipping 66 matching lines @@
 # For collecting metrics
 time
 
 # Install the chromeos build of upstart
 upstart
 
 # Listed as a recommendation rather than dependency by chromeos-chrome to
 # make it easier to replace it with different versions, but included here
 # to make sure that we always include it in images.
 flashplugin-installer