Bundle arel for AR integration tests

actionpack/Gemfile

@@ -6,13 +6,12 @@ gem "rack", "1.0.1", :git => "git://github.com/rails/rack.git", :branch => "rack
 gem "rack-test", "~> 0.5.0"
 gem "activesupport", "3.0.pre", :vendored_at => rails_root.join("activesupport")
 gem "activemodel", "3.0.pre", :vendored_at => rails_root.join("activemodel")
+gem "arel", :git => "git://github.com/rails/arel.git"
 gem "activerecord", "3.0.pre", :vendored_at => rails_root.join("activerecord")
 gem "erubis", "~> 2.6.0"
 
-only :test do
-  gem "mocha"
-  gem "sqlite3-ruby"
-  gem "RedCloth"
-end
+gem "mocha"
+gem "sqlite3-ruby"
+gem "RedCloth"
 
 disable_system_gems