this improves encapsulation, simplifying occurrences like the following:

    Rails.logger.tagged("DEBUG") { Rails.logger.debug(msg) }

... by removing the need to rely on (i.e. repeat) outer variables:

    Rails.logger.tagged("DEBUG") { |logger| logger.debug(msg) }

  Second security vulnerability found in mail file delivery method
  patched in version 2.4.4.

Build fix for app_generator_test.rb

Autosave association doesn't save all records on a new record for a collection association if there are records marked for destruction

time_tag support for blocks

Fix bug with autosave collection association on new record with a marked for destroy record in autosave collection.

Fix GH #5435. db:structure:dump should be re-enable.

Fix typo in ActiveRecord::Relation#blank? test

Remove Rack::SSL in favour of ActionDispatch::SSL

Conflicts:
	railties/guides/source/getting_started.textile

Fix for #5440

Add :conditions option to uniqueness validator

Should use an argument in http_digest_authentication_test.rb

fixed - warning: instance variable @controller not initialized

switch rack-test in Gemfile to using git protocol

use consistent explicit module inclusion

aid ease of understanding and readability for tests

can't run tests if git not compiled with libcurl

Fix ActiveRecord::Relation#blank? tests

not be added to every ActiveRecord::Base object.  Changed acts_as_yaffle
so it will include the LocalInstanceMethods module.  Now only
models that call acts_as_yaffle will get the squawk method, instead
of pushing them into every ActiveRecord::Base.

acts_as_yaffle expects a symbol, so the string was causing the tests
to always fail.