Don't paramify ActionDispatch::Http::UploadedFile in tests

To test uploading a file without using fixture_file_upload, a posted
ActionDispatch::Http::UploadedFile should not be paramified (just like
Rack::Test::UploadedFile).
(Rack::Test::UploadedFile and ActionDispatch::Http::UploadedFile don't
share the same API, tempfile is not accessible on
Rack::Test::UploadedFile as discussed in
https://github.com/brynary/rack-test/issues/30)
ruby 1.9 hash syntax for generated code

app/controllers/application_controller.rb
app/views/layouts/application.html.erb
config/application.rb
config/routes.rb
test/performance/browsing_test.rb
format the 4.0 release notes [ci skip]
Merge pull request #6836 from flyerhzm/ruby_19_hash

Ruby 1.9 hash syntax for generated code
Move tasks(rake) tests to under the tasks dir.
Merge pull request #6837 from kennyj/move_to_tasks_dir

Move Active Record rake tasks tests to under the tasks dir [ci skip]
Merge pull request #6805 from tim-vandecasteele/uploadedfile-paramify

Don't paramify ActionDispatch::Http::UploadedFile in tests
Stop assuming strings for grouped calculations

Execute_grouped_calculation is one of those places where
ActiveRecord forgets that it has ARel underpinnings, and
assumes that the values provided to group_values are
strings. This artificially hobbles otherwise functional
code. This patch stops assuming that incoming values
respond to to_sym, stops using string interpolation for
table aliases on objects that support aliasing, and stops
unnecessarily joining group_values on the relation.

Additionally, it calls to_sql, if available, on objects
sent to column_alias_for, in order to get a more reasonable
alias string than a non-string's default to_str method.
Merge pull request #6842 from ernie/handle-non-strings-in-grouped-calculations

Stop assuming strings for grouped calculations
correct line numbers for reader and writer methods
Merge pull request #6847 from benolee/patch-1

Correct line numbers for reader and writer methods in AS configurable

The line number for the reader method is off by one due to the local variable line being reassigned to the writer's line.

This commit would provide correct line numbers for backtraces and method introspection (for example, method(:reader).source_location).
Remove some not used variables and improve code a bit
Do not propagate the :raise option to AS number helpers

ActiveSupport::NumberHelper does not make use of :raise, so there's no
need to propagate it down.
Move constants to the top, remove freeze
Refactor AV number helper tests with invalid numbers

Just make use of the returning exception from assert_raise, instead of
calling the method again with a rescue clause to test the saved
exception number.
Move number helper i18n related tests to AS

They also make more sense here since all the related logic with I18n is
handled by AS::NumberHelper, and not by AV anymore.
Get rid of the clear_i18n hack by using a different locale

Use a different and very specific locale for testing currency negative
format, and an empty store for currency defaults.
Merge branch 'number-helpers-refactor'

Refactor and improve a bit number helpers code.
Revert "Merge pull request #6344"

This commit needs to be reverted because it introduces difficulties when
using sqlite3 in development and other databases in production. This
happens because when you create time column in sqlite3, it's dumped as
datetime in schema.rb file.

This reverts commit 57d534ee9e441d078fcc161c0c78ebaa5aacd736, reversing
changes made to 20f049fb50daee0c5e5a69b55b529af5737e8e3f.

Conflicts:

	activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb
Rails 4 will be 1.9.3+ only [ci skip]