Fix failing ENV tests

We need the ARGV extension now that we call ARGV.build_bottle? in
set_cpu_cflags.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Library/Homebrew/test/test_ENV.rb

@@ -2,7 +2,9 @@ require 'testing_env'
 require 'utils'
 require 'hardware'
 require 'extend/ENV'
+require 'extend/ARGV'
 ENV.extend(HomebrewEnvExtension)
+ARGV.extend(HomebrewArgvExtension)
   
 class EnvironmentTests < Test::Unit::TestCase
   def test_ENV_options