[In progress] Fix copy resources script for iOS < 6 and OS X < 10.8

Remove the following flag from the script to avoid crashes

ibtool:

--reference-external-strings-file
              When combined with the --compile option, this flag indicates that the files in the Base.lproj locale  folder  should  be
              compiled  to reference the matching external strings files found in the other locales when loaded. Available on 10.8 and
              later.

lib/cocoapods/generator/copy_resources_script.rb

@@ -34,13 +34,14 @@ EOS
       attr_reader :resources
 
       # A list of files relative to the project pods root.
-      def initialize(resources = [])
+      def initialize(resources = [], reference_external_strings_file = false)
         @resources = resources
+        @reference_external_strings_file = reference_external_strings_file
       end
 
       def save_as(pathname)
         pathname.open('w') do |script|
-          script.puts CONTENT
+          script.puts @reference_external_strings_file ? CONTENT : CONTENT.gsub(' --reference-external-strings-file', '')
           @resources.each do |resource|
             script.puts "install_resource '#{resource}'"
           end

lib/cocoapods/installer/target_installer.rb

@@ -222,7 +222,9 @@ module Pod
         UI.message "- Generating copy resources script at #{UI.path(path)}" do
           resources = library.file_accessors.map { |accessor| accessor.resources.flatten.map {|res| project.relativize(res)} }.flatten
           resources << bridge_support_file if bridge_support_file
-          generator = Generator::CopyResourcesScript.new(resources)
+          # @todo inspect library.platform to see if it is osx 10.8+ or 6.0+
+          greaterorquealto_osx10_8_or_ios6 = true
+          generator = Generator::CopyResourcesScript.new(resources, greaterorquealto_osx10_8_or_ios6)
           generator.save_as(path)
           add_file_to_support_group(path)
         end