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

cros_show_stacks

Index: cros_show_stacks
diff --git a/cros_show_stacks b/cros_show_stacks
index fa6b769321d821385ee337217ff0749f41768d5a..be2eb25e89796b05fbc187008f948e87854cfa93 100755
--- a/cros_show_stacks
+++ b/cros_show_stacks
@@ -6,11 +6,28 @@
 
 # Script to generate stackdumps from a machine or dmp files.
 
-# Load common constants.  This should be the first executable line.
-# The path to common.sh should be relative to your script's location.
+# --- 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 ---
 
-. "$(dirname $0)/common.sh"
-. "$(dirname $0)/remote_access.sh"
+. "${SCRIPT_ROOT}/remote_access.sh" || die "Unable to load remote_access.sh"
 
 assert_inside_chroot