This reverts commit fa3ef8e8, reversing
changes made to e0af93dd.

Reason: Routes, Active Record and the rendering stack should not depend
on the default locale

Searching for rails executable correctly

 * Current logic of finding Rails executable in parent directory is
   not returning full path of executable if it is found in one of the
   parent directories
 * To compensate for this, we have to call exec_app_rails recursively
   until the executable is found or we cant do 'chdir' anymore
 * This solution finds the correct executable path from parent
   directory(s) recursively

Using public send instead of send for the PerThreadRegistry module.

Prevents you from accidentally calling a protected method.

Removed unused setup

Fixed typo

If a request has unknown format (eg. /foo.bar), the renderer
fallbacks to default format.

This patch reverts Rails 3.2 behavior after c2267db3 commit.

Fixes issue #9654.

Fix inflector to respect default locale.

Grouping thread locals in ActiveRecord

The inflector was made aware of locales in 7db0b073,
but it defaulted to :en. That should actually be our default
locale instead.

Fixes #10125

PerThreadRegistry module.

thread local variables.

Use camelize instead of capitalize on template error screen

Get Action Mailer guide ready for prime time [ci skip]

Rails 4 prints help for "rails new" when running "rails console"

Removed unused setup

Delegating the value getter and setters in the ScopeRegistry

changed variable name active_record => base_klass

Current code stores the klass name in active_record and this
is used throughout. While reviewing the code time and again
I had the mental picture of active_record being an instance of
a klass. However here the actual klass is being stored in
@active_record.

Secondly at two different places while referring to @active_record
the comment refers to it as base klass. All this points to
active_record being not the best variable name.

So I thought it is better to replace active_record with base_klass.

This change is confined to JoinDependency, JoinBase, JoinPart and
JoinAssociation - all joining related work.

Add TEST_DIRS enviroment for constrain test directories in rakefile

change array of array to hash

fix AP warning; remove unused variable

Consolidating thread locals in AS::Notifications

instrumenters for the AS::Notifications module.

Mark unused variables and make some style fixes