Update links to point at new location of parallel_emerge.

mod_image_for_test.sh

 #!/bin/bash
 
 # Copyright (c) 2009 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.
 
 # Script to modify a keyfob-based chromeos system image for testability.
 
 # --- BEGIN COMMON.SH BOILERPLATE ---
 # Load common CrOS utilities.  Inside the chroot this file is installed in
@@ skipping 43 matching lines @@
 
 
 # Parse command line
 FLAGS "$@" || exit 1
 eval set -- "${FLAGS_ARGV}"
 
 EMERGE_CMD="emerge"
 EMERGE_BOARD_CMD="emerge-${FLAGS_board}"
 if [ "${FLAGS_fast}" -eq "${FLAGS_TRUE}" ]; then
   echo "Using alternate emerge"
-  EMERGE_CMD="${SCRIPTS_DIR}/parallel_emerge"
+  EMERGE_CMD="${GCLIENT_ROOT}/chromite/bin/parallel_emerge"
   EMERGE_BOARD_CMD="${EMERGE_CMD} --board=${FLAGS_board}"
 fi
 
 # No board, no default and no image set then we can't find the image
 if [ -z $FLAGS_image ] && [ -z $FLAGS_board ] ; then
   setup_board_warning
   die "mod_image_for_test failed.  No board set and no image set"
 fi
 
 # We have a board name but no image set.  Use image at default location
@@ skipping 170 matching lines @@
 cleanup
 
 # Now make it bootable with the flags from build_image
 "${SCRIPTS_DIR}/bin/cros_make_image_bootable" "$(dirname "${FLAGS_image}")" \
                                             $(basename "${FLAGS_image}")
 
 print_time_elapsed
 
 trap - EXIT