This removes all deprecated classes in ActionController related to
Routing, Abstract Request/Response and Integration/IntegrationTest.
All tests and docs were changed to ActionDispatch instead of ActionController.

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Improve performance of applications using file uploads by not busting the method cache on every request containing a file upload.

Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

Raise ArgumentError instead of normalizing controller name when there is a leading slash [#5651 state:resolved]

	Allows specifying blocks to the routeset that will get 	appended after the RouteSet is drawn.

removes /i from the TRUSTED_PROXIES regexp, adds /x and comments for readability, adds a pointer to a Wikipedia section that documents the matched IPs

Partial revert of commit #7fae0aa4 removing action_dispatch.prepare_dispatcher per commit #48bf667a

See line note:
http://github.com/rails/rails/commit/7fae0aa4ac116bcbf522a9a4f19972c653d366fa#commitcomment-145148

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Ported missing functionality from Rails 2.3.x, raise error on wrong regexps in :constraints in routes

Do not use ActionController::Base.page_cache_extension in initialize to not load more ActiveSupport than we need

Add possibility to explicitly call engine's routes through polymorphic_routes, for example: polymorphic_url([blog, @post])

This change allows using namespaced models with polymorphic_url,
in the way that you would use them without namespace.

Let's say that you have Blog::Post model in namespaced Engine. When you use
polymorphic_path with Blog::Post instances, like in form_for(@post),
it will look for blog_posts_path named url helper. As we are inside Blog::Engine,
it's annoying to always use the prefix. With this commit, blog_ prefix will be
removed and posts_path will be called.