Allow define_attribute_methods to pass multiple values

mailer can be anonymous

Support data: url scheme

Conflicts:
	actionpack/lib/action_view/asset_paths.rb

Custom coders support for ActiveRecord::Store. 

use const_defined? with second argument in AS::Dependencies

Introduced in 0f848dd5.

Ruby prof fixes

Refactor App Generator Test

there is no need in local_const_defined? helper method

remove useless tests for Range#step

Closes #6297

require "rubygems" is obsolete in Ruby 1.9.3

`number_with_delimiter': undefined method 
`safe_join' for 
#<ActiveSupport::Testing::Performance::Metrics::Objects

fixme: use minitest skip instead of return nil

closes #5970

Use the more idiomatic tap method

Improve and cleanup a bit partial renderer

HTML5 validation error with options_from_collection_for_select

Fixes #5908

Conflicts:
	actionpack/CHANGELOG.md

* Remove template assignment: there is no need for this assignment,
  given we are rendering a collection with possibly different templates,
  and a second call to render (with the same instance) would behave
  differently if the template is set.
* Remove segments array in favor of Array#map
* Use local vars whenever possible
* Cache local template keys, remove defaults from find_template