This starts to fix the scripts so that they load from /usr/lib/crosutils

get_latest_image.sh

 #!/bin/bash
 
 # Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Prints the path to the most recently built image to stdout.
 
-# Load common constants.  This should be the first executable line.
-# The path to common.sh should be relative to your script's location.
-. "$(dirname "$0")/common.sh"
+# --- BEGIN COMMON.SH BOILERPLATE ---
+# Load common CrOS utilities.  Inside the chroot this file is installed in
+# /usr/lib/crosutils.  Outside the chroot we find it relative to the script's
+# location.
+find_common_sh() {
+  local common_paths=(/usr/lib/crosutils $(dirname "$(readlink -f "$0")"))
+  local path
+
+  SCRIPT_ROOT=
+  for path in "${common_paths[@]}"; do
+    if [ -r "${path}/common.sh" ]; then
+      SCRIPT_ROOT=${path}
+      break
+    fi
+  done
+}
+
+find_common_sh
+. "${SCRIPT_ROOT}/common.sh" || (echo "Unable to load common.sh" && exit 1)
+# --- END COMMON.SH BOILERPLATE ---
 
 get_default_board
 
 DEFINE_string board "$DEFAULT_BOARD" \
   "The name of the board to check for images."
 
 # Parse command line flags
 FLAGS "$@" || exit 1
 eval set -- "${FLAGS_ARGV}"
 
 # Check on the board that they are trying to set up.
 if [ -z "$FLAGS_board" ] ; then
   die "Error: --board required."
 fi
 
 IMAGES_DIR="${DEFAULT_BUILD_ROOT}/images/${FLAGS_board}"
 
 # If there are no images, return nothing
 [ -d $IMAGES_DIR ] || exit 0
 
 # Use latest link if it exists, otherwise most recently changed dir
 if [ -L ${IMAGES_DIR}/latest ] ; then
   DEFAULT_FROM="${IMAGES_DIR}/`readlink ${IMAGES_DIR}/latest`"
 else
   DEFAULT_FROM="${IMAGES_DIR}/`ls -t $IMAGES_DIR | head -1`"
 fi
 
 echo $DEFAULT_FROM