add test to show offset query_methods on mysql & mysql2

change test to cover public API

Improved ActiveSupport::Autoload Performance

`ActiveSupport::Autoload#autoload` performance is improved in the default
case where a path is present. Since the full path name is not generated, it
isn't necessary to determine the full constant name either. This results in a
3x performance gain and reduces the number of Ruby objects generated. For a full
benchmark check [this gist](https://gist.github.com/2020228).

Fixes #5324 by removing default size options from input:text and default cols and rows options from textarea.

Add ability to define callbacks in ActionMailer

Prior to this commit, there isn't a good way of adding things like
default inline attachments to an email.  This Stack Overflow thread
shows people using hooks like the 'default' method in ActionMailer::Base
to call a Proc for message configuration:

http://stackoverflow.com/questions/5113121/rails-use-same-attachment-for-all-emails-using-layout

This has the unintended side effect of setting a message header, so it's not a good solution.

This pull request adds support for message modifications by including AbstractController:Callbacks
in ActionMailer::Base. It includes tests and documentation for the functionality
provided by including this module.

Fix comments about to_partial_path

configure how unverified request will be handled

Fix actionmailer tests broken by #4751a699

Change api_only to http_only and add MiddlewareStackProxy docs

[Carlos Antonio da Silva & Santiago Pastorino]

[Carlos Antonio da Silva & Santiago Pastorino]

Fixes #5324 by removing default size options from input:text and default cols and rows options from textarea.

Active model serialization :include returning string keys

Better syntax highlight :)

can be configured using `:with` option in `protect_from_forgery` method
or `request_forgery_protection_method` config option

possible values:
- :reset_session (default)
- :exception

new applications are generated with:

    protect_from_forgery :with => :exception

Use one system call whenever possible, group rake and Dir.chdir calls

In AR depths use &:to_i before :uniq to process mixed arrays likes ["1", 1] correct

Missing active_model/naming.rb dependency.

Fix my name in the CHANGELOG to follow the convention

Remove warning of unused variable

ActiveModel::Name constructor expects to be able to call #blank? on a
String but the core Object#blank? extension is never required.

Also add missing entries and use the formating convention

make active_connection? return true only if there is an open connection in use for the current thread. fixes #5330