Make FileUtils extension available globally

Now that we are monkeypatching copy_metadata, we should load our
extension up front for consistency.

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

Library/Homebrew/formula.rb

@@ -3,7 +3,6 @@ require 'dependencies'
 require 'formula_support'
 require 'hardware'
 require 'bottles'
-require 'extend/fileutils'
 require 'patches'
 require 'compilers'
 require 'build_environment'

Library/Homebrew/global.rb

@@ -1,3 +1,4 @@
+require 'extend/fileutils'
 require 'extend/pathname'
 require 'extend/ARGV'
 require 'extend/string'
@@ -75,7 +76,6 @@ HOMEBREW_USER_AGENT = "Homebrew #{HOMEBREW_VERSION} (Ruby #{RUBY_VERSION}-#{RUBY
 
 HOMEBREW_CURL_ARGS = '-qf#LA'
 
-require 'fileutils'
 module Homebrew extend self
   include FileUtils
 

Library/Homebrew/test/testing_env.rb

@@ -7,6 +7,7 @@
 ABS__FILE__=File.expand_path(__FILE__)
 
 $:.push(File.expand_path(__FILE__+'/../..'))
+require 'extend/fileutils'
 require 'extend/pathname'
 require 'extend/string'
 require 'exceptions'
@@ -31,7 +32,6 @@ at_exit { HOMEBREW_PREFIX.parent.rmtree }
 # Test fixtures and files can be found relative to this path
 TEST_FOLDER = Pathname.new(ABS__FILE__).parent.realpath
 
-require 'fileutils'
 module Homebrew extend self
   include FileUtils
 end