This reverts commit 3ea84035, reversing
changes made to e4cde5d5.

Conflicts:
	activerecord/CHANGELOG.md
	activerecord/lib/active_record/relation/query_methods.rb

Reason: using `from` without `select` should not change the select list
to SELECT * because it can lead different query results. If it is needed
to change the table to a subquery or a view you can pass a table alias
in the `from` call or use `select('subquery.*')`.

Fixes #14049.

Hstore arrays fix (follow up for #11444)

We didn't have enough encoding for the wire protocol to store an array
of hstore types. So, further encode any hstore that is an array member.
Whilst we're here, ensure it's an HashWithIndifferentAccess being
returned, to be consistent with other serialized forms, and add testing
for arrays of hstore.

So now the following migration:

  enable_extension "hstore"
  create_table :servers do |t|
    t.string  :name
    t.hstore  :interfaces, array: true
  end

produces a model that can used like this, to store an array of hashes:

  server = Server.create(name: "server01", interfaces: [
    { name: "bge0", ipv4: "192.0.2.2", state: "up" },
    { name: "de0", state: "disabled", by: "misha" },
    { name: "fe0", state: "up" },
  ])

More at http://inopinatus.org/2013/07/12/using-arrays-of-hstore-with-rails-4/

Guides fixes

Add a missing changelog entry for #13981 and #14035

[ci skip]

Revert "Fixed plugin_generator test"

As this commit  22a1a5ac has reverted all changes so this plugin generator also needs to fix.

This reverts commit fefa8ae9.

If we know the alias tracker is empty, we can create one that doesn't
use a hash with default block for counting.

ActiveRecord::Base.establish_connection(adapter: 'sqlite3',
                                        database: ':memory:')

ActiveRecord::Schema.define do
  create_table :posts, force: true do |t|
    t.integer :comments_count
  end

  create_table :comments, force: true do |t|
    t.integer :post_id
  end
end

class Post < ActiveRecord::Base; has_many :comments; end
class Comment < ActiveRecord::Base; belongs_to :post, counter_cache: true; end
10.times { Comment.create!(post: Post.create!) }

record = Post.first
association_name = :comments

Benchmark.ips do |x|
  reflection = record.class.reflect_on_association(association_name)
  association = reflection.association_class.new(record, reflection)
  x.report('assoc') do
    reflection.association_class.new(record, reflection)
  end
  x.report('reader') do
    association.reader;nil
  end
  x.report('combined') do
    reflection.association_class.new(record, reflection).reader;nil
  end
end

[aaron@higgins rails (tracker)]$ TEST=ips bundle exec ruby ../1bb5456b5e035343df9d/gistfile1.rb
-- create_table(:posts, {:force=>true})
   -> 0.0062s
-- create_table(:comments, {:force=>true})
   -> 0.0003s
Calculating -------------------------------------
               assoc       833 i/100ms
              reader     28703 i/100ms
            combined       839 i/100ms
-------------------------------------------------
               assoc     9010.3 (±3.8%) i/s -      44982 in   5.000022s
              reader  3214523.4 (±5.5%) i/s -   16016274 in   5.001136s
            combined     8841.0 (±5.8%) i/s -      44467 in   5.049269s

[aaron@higgins rails (tracker)]$ TEST=ips bundle exec ruby ../1bb5456b5e035343df9d/gistfile1.rb
-- create_table(:posts, {:force=>true})
   -> 0.0060s
-- create_table(:comments, {:force=>true})
   -> 0.0003s
Calculating -------------------------------------
               assoc       888 i/100ms
              reader     29217 i/100ms
            combined       900 i/100ms
-------------------------------------------------
               assoc     9674.3 (±3.3%) i/s -      48840 in   5.054022s
              reader  2988474.8 (±6.9%) i/s -   14842236 in   4.998230s
            combined     9674.0 (±3.1%) i/s -      48600 in   5.028694s

This helps with our sanity.  The class is internal, we can refactor to a
"nice" API later.

AssociationScope no longer maintains state, so we're safe to keep a
singleton and save on GC time

Squashed commit of the following:

commit 96991e8e919edfb20cc4120bca4e36ed51175d57
Author: Aaron Patterson <aaron.patterson@gmail.com>
Date:   Fri Feb 14 11:29:24 2014 -0800

    Revert "gems can be added or skipped from the template"

    This reverts commit 8beb42cf.

    Conflicts:
    	railties/lib/rails/generators/rails/app/app_generator.rb
    	railties/test/generators/app_generator_test.rb

commit 35599c0e657245ef14ac0f28c9189ad16acf40e6
Author: Aaron Patterson <aaron.patterson@gmail.com>
Date:   Fri Feb 14 11:26:53 2014 -0800

    Revert "oops, template replay needs to happen after bundle. :orz:"

    This reverts commit 9104702b.

    Conflicts:
    	railties/lib/rails/generators/rails/app/app_generator.rb

commit f519c3902c313db8e906a49251c91643b8e6499e
Author: Aaron Patterson <aaron.patterson@gmail.com>
Date:   Fri Feb 14 11:25:51 2014 -0800

    Revert "only ask for these ivars if the target responds to them"

    This reverts commit 656d4125.

commit aa524a9428e3e4c45fe221f10a66a08efb827ab5
Author: Aaron Patterson <aaron.patterson@gmail.com>
Date:   Fri Feb 14 11:25:39 2014 -0800

    Revert "refactor generator tests to use block form of Tempfile"

    This reverts commit 65251820.

commit 7d3740549fa4dfa62e3761f8d4bc6d6d441256e7
Author: Aaron Patterson <aaron.patterson@gmail.com>
Date:   Fri Feb 14 11:25:25 2014 -0800

    Revert "add a more restricted codepath for templates fixes #13390"

    This reverts commit 2875b4a6.

commit 525df0af1001918986cdfce59539fd2d52c4f32c
Author: Aaron Patterson <aaron.patterson@gmail.com>
Date:   Fri Feb 14 11:25:11 2014 -0800

    Revert "add a send so `apply` can be called.  Fixes #13510"

    This reverts commit c5034d60.

Add verb to sanitization note

Fix path shown in mailer's templates

Add hint to error message of task db:migrate:down

Remove unused fixtures from sqlite3 test case

[Guides] fix guide active_support_core_extensions. add Note to String#indent [ci skip]

updated Travis build status image url

Explain how form_for :article is able to pull in the properties of @article
Make it clear that article_id is generated due to the association set up

Add link to the rails function that uses X-Sendfile.
Add links to apache and nginx docs for the header