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

create_legacy_bootloader_templates.sh

 #!/bin/bash
 
 # Copyright (c) 2010 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.
 
 # Helper script that generates the signed kernel image
 
-. "$(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
 
 # Flags.
 DEFINE_string arch "x86" \
   "The boot architecture: arm or x86. (Default: x86)"
 # TODO(wad) once extlinux is dead, we can remove this.
 DEFINE_boolean install ${FLAGS_FALSE} \
   "Controls whether extlinux is run on 'to'. (Default: false)"
 DEFINE_string to "/tmp/boot" \
@@ skipping 185 matching lines @@
 EOF
   if [[ ${FLAGS_enable_rootfs_verification} -eq ${FLAGS_TRUE} ]]; then
     sudo sed -i -e 's/^set default=.*/set default=2/' \
        "${FLAGS_to}/efi/boot/grub.cfg"
   fi
   info "Emitted ${FLAGS_to}/efi/boot/grub.cfg"
   exit 0
 fi
 
 info "The target platform does not use bootloader templates."