Move I18n dependency back to ActiveSupport.

actionpack/actionpack.gemspec

@@ -20,7 +20,6 @@ Gem::Specification.new do |s|
   s.add_dependency('activemodel',      version)
   s.add_dependency('rack-cache',       '~> 1.0.1')
   s.add_dependency('builder',          '~> 3.0.0')
-  s.add_dependency('i18n',             '~> 0.6.0beta1')
   s.add_dependency('rack',             '~> 1.3.0.beta2')
   s.add_dependency('rack-test',        '~> 0.6.0')
   s.add_dependency('rack-mount',       '~> 0.8.1')

activemodel/activemodel.gemspec

@@ -18,6 +18,5 @@ Gem::Specification.new do |s|
 
   s.add_dependency('activesupport', version)
   s.add_dependency('builder',       '~> 3.0.0')
-  s.add_dependency('i18n',          '~> 0.6.0beta1')
   s.add_dependency('bcrypt-ruby',   '~> 2.1.4')
 end

activesupport/activesupport.gemspec

@@ -9,12 +9,13 @@ Gem::Specification.new do |s|
 
   s.required_ruby_version = '>= 1.8.7'
 
-  s.author            = 'David Heinemeier Hansson'
-  s.email             = 'david@loudthinking.com'
-  s.homepage          = 'http://www.rubyonrails.org'
+  s.author       = 'David Heinemeier Hansson'
+  s.email        = 'david@loudthinking.com'
+  s.homepage     = 'http://www.rubyonrails.org'
 
   s.files        = Dir['CHANGELOG', 'README.rdoc', 'lib/**/*']
   s.require_path = 'lib'
 
+  s.add_dependency('i18n', '~> 0.6.0beta1')
   s.add_dependency('multi_json', '~> 1.0')
 end

activesupport/lib/active_support/i18n.rb

@@ -2,7 +2,7 @@ begin
   require 'i18n'
   require 'active_support/lazy_load_hooks'
 rescue LoadError => e
-  $stderr.puts "You don't have i18n installed in your application. Please add it to your Gemfile and run bundle install"
+  $stderr.puts "The i18n gem is not available. Please add it to your Gemfile and run bundle install"
   raise e
 end