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

bin/cros_start_vm

Index: bin/cros_start_vm
diff --git a/bin/cros_start_vm b/bin/cros_start_vm
index 63079203495a0ef49b708a787fda7a1cf4389943..f88b1eda4da79e53ca726bfe7743139362811496 100755
--- a/bin/cros_start_vm
+++ b/bin/cros_start_vm
@@ -6,9 +6,30 @@
 #
 # Simple wrapper scipt to start a vm using the vm lib.
 
-. "$(dirname $0)/../common.sh"
-. "$(dirname $0)/../lib/cros_vm_lib.sh"
-. "$(dirname "$0")/../lib/cros_vm_constants.sh"
+# --- BEGIN COMMON.SH BOILERPLATE ---
+# Load common CrOS utilities.  Inside the chroot this file is installed in
+# /usr/lib/crosutils.  Outside the chroot we find it relative to the script's
+# location.
+find_common_sh() {
+  local common_paths=(/usr/lib/crosutils "$(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_ROOT}/lib/cros_vm_lib.sh" || die "Unable to load cros_vm_lib.sh"
+. "${SCRIPT_ROOT}/lib/cros_vm_constants.sh" || \
+  die "Unable to load cros_vm_constants.sh"
 
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