This reverts commit 667d0bdd, reversing
changes made to 4ae6bab6.

Closes #6274

mispelling errors in render_text_test.rb

Add commas missing in performance tests

Object#try can't call private methods

refactored extracting :size => 'XxY' into an extract_size! method

mispelling error in actionpach changelog

Makes it consistent with Relation. Can't see a use for this.

require 'action_view' is now much faster

This helps bring the interfaces of CollectionProxy and Relation closer
together, and reduces the delegation backflips we need to perform.

For example, first_or_create is defined thus:

class ActiveRecord::Relation
  def first_or_create(...)
    first || create(...)
  end
end

If CollectionProxy < Relation, then post.comments.first_or_create will
hit the association's #create method which will actually add the new record
to the association, just as post.comments.create would.

With the previous delegation, post.comments.first_or_create expands to
post.comments.scoped.first_or_create, where post.comments.scoped has no
knowledge of the association.

Add test Hash#except can receive more than one argument.

In robots.txt User-agent should be all downcase except for the first 'U'

In robots.txt, User-agent should be all downcase except for the first 'U', according with http://en.wikipedia.org/wiki/Robots_exclusion_standard

Plugin generator crashes when using the --dummy-path option

Code was assuming the application name in `config/application.rb`
was module Dummy.

This commit improves the handling of default_url_options in integration
tests by making behave closer to how a real application operates.

Specifically the following issues have been addressed:

* Options specified in routes.rb are used (fixes #546)
* Options specified in controllers are used
* Request parameters are recalled correctly
* Tests can override default_url_options directly

remove duplicate usage of Rack::Utils.status_code in LogSubscriber#process_action

add unless_exist option to memory store

Remove key argument from run_callbacks to fix build

Removing key argument from run_callbacks method in abstract_controller