Move Mac build tool scripts only used by chrome.gyp from build/mac into chrome/tools/build/mac

chrome/app/tweak_mac_lproj_folders

-#!/bin/sh
-
-# Copyright (c) 2009 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# This script is intended to run from a "postbuild" action from within Xcode.
-# It will create any symlinks needed to sync up what comes from the GRIT files
-# with what Cocoa would like.
-
-set -e
-
-# Working in the resources directory
-cd "${BUILT_PRODUCTS_DIR}/${CONTENTS_FOLDER_PATH}/Resources"
-
-# Provide an link for en.lproj that points to en_US.lproj.
-
-# The standard OS language list includes English (en) and not a specific
-# "flavor" such as U.S. English (en_US). When checking for a language match,
-# the OS will remove subtags if no exact match is found, so that en will be
-# used if the user's preferred language list only contains British English
-# (en_GB) and no specific en_GB translation is available.
-#
-# To ensure that users with the default language list, which contains English
-# without any regional subtag, as well as users with a specific variant of
-# English with a regional subtag, will have access to an English-localized
-# application, a symbolic link from en.lproj to en_US.lproj is provided.
-ln -fhs "en_US.lproj" "en.lproj"