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

set_shared_user_password.sh

Index: set_shared_user_password.sh
diff --git a/set_shared_user_password.sh b/set_shared_user_password.sh
index 25baca0e632352cce4b01469bebd2cadf2a70485..bdc7c44f1a252a37ce8d6e9bfd582a68e222a048 100755
--- a/set_shared_user_password.sh
+++ b/set_shared_user_password.sh
@@ -7,12 +7,29 @@
 # Script to set the password for the shared user account.  Stores the
 # MD5crypt'd password to a file, for use by customize_rootfs.sh.
 
-# 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 ---
 
 # Script must be run inside the chroot
-restart_in_chroot_if_needed $*
+restart_in_chroot_if_needed "$@"
 
 FLAGS_HELP="USAGE: $0 [flags]"