Closes #9435.

Skip valid encoding checks for non-String parameters that come
from the matched route's defaults.

Closes #9432.

[ci skip]

The debug helper should inspect the object when it can't be converted to YAML, this behavior was changed in 8f8d8eb1.

Since all changes from #9347 are related to AS, it seems proper that the
test is placed there as well.

ActiveSupport::NumberHelper#number_to_human now returns the number unaltered when
the units hash does not contain the needed key, e.g. when the number provided is less
than the largest key provided.

  Before `time_tag Date.today` will return `<time
  datetime="2013-02-14T00:00:00+00:00">February 14, 2013</time>`.
  This commit fixes time_tag helper to use RFC-3339 full-date format
  (Y-m-d) in datetime attribute.

This reverts commit 6871bd98.

Closes #7554.

This patch determines the `controller#action` directly
in the `match` method when the shorthand syntax is used.
this prevents problems with namespaces and scopes.

It's faster, and doesn't force us to dup the timezones array.

This seemed to be introduced in master by
9dd64f2e, so there's no need to add a
changelog entry for fixing it.

[ci skip]

This reverts commit bb842e8d, reversing
changes made to 40c287c7.
This was causing issues in one of our apps we just upgraded.
ActionController::RoutingError: No route matches [GET]
"/images/favicon.ico"
favicon_link_tag now returns '/images/favicon.ico' and in 3.2 returned
'/favicon.ico'
Browsers by default look for favicon.ico in the root directory

Conflicts:
	actionpack/CHANGELOG.md
	actionpack/lib/action_view/helpers/asset_tag_helper.rb

If you want an ability to parse XML parameters, please install
`actionpack-xml_parser` gem.

Previous implementation of time_zone_options_for_select did not dup the
ActiveSupport::TimeZone.all array.  When :priority_zones were provided
the method would reject! the zones from the memoized TimeZones array
thus affecting future requests to the server.  Essentially whatever
zones were specified as :priority_zones would show up for the first
request but then disappear from the time zone options on future
requests.