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

create_legacy_bootloader_templates.sh

Index: create_legacy_bootloader_templates.sh
diff --git a/create_legacy_bootloader_templates.sh b/create_legacy_bootloader_templates.sh
index 8bfa761617b5d83d52f1641ba613f3f797ce0750..314363775d2aa8b82273b3095d52b02467a84dad 100755
--- a/create_legacy_bootloader_templates.sh
+++ b/create_legacy_bootloader_templates.sh
@@ -6,7 +6,26 @@
 
 # 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