Prevent Numeric#to_s from allocating an array
Allow failures with Active Job
Allow failures with Active Job integration tests
[ci skip] fix class name
Merge pull request #17828 from yui-knk/fix/i18n_guide

[ci skip] fix class name
Remove a reference to Ruby 1.9 in Guides

[ci skip]

Now that Rails requires Ruby >= 2.0 there is no need to document
Ruby 1.9.
Merge pull request #17838 from claudiob/remove-ruby19-reference-in-guides

Remove a reference to Ruby 1.9 in Guides
Bump required Ruby version to 2.1.0

[This article](http://weblog.rubyonrails.org/2014/8/20/Rails-4-2-beta1/#maintenance-consequences-and-rails-5-0) states that:

> Rails 5.0 is in most likelihood going to target Ruby 2.2.

Before the exact minimum version is fully decided, @arthurnn [suggests](https://github.com/rails/rails/pull/17830#issuecomment-64940383)
that **at least** version 2.1.0 **must** be required by the `gemspec` files.
Merge pull request #17830 from claudiob/bump-required-ruby-version

Bump required Ruby version to 2.1.0
Merge pull request #17816 from byroot/prevent-numeric-to-s-to-allocate-an-array

Prevent Numeric#to_s from allocating an array
adds missing period in test.rb [ci skip]
Pass symbol as an argument instead of a block
Merge pull request #16833 from sferik/symbol_to_proc

Pass symbol as an argument instead of a block
Apply schema cache dump when creating connections

The `db:schema:cache:dump` rake task dumps the database schema structure
to `db/schema_cache.dump`. If this file is present, the schema details
are loaded into the currently checked out connection by a railtie while
Rails is booting, to avoid having to query the database for its schema.

The schema cache dump is only applied to the initial connection used to
boot the application though; other connections from the same pool are
created with an empty schema cache, and still have to load the structure
of each table directly from the database.

With this change, a copy of the schema cache is associated with the
connection pool and applied to connections as they are created.