Update CHANGELOGs for 3.2.13 release.
Preparing for 3.2.13.rc1 release
Freeze columns only once per Result

Conflicts:
	activerecord/lib/active_record/result.rb
Revert "Merge pull request #8209 from senny/backport_8176"

This reverts commit 724020278480855bddfe749c91f1074d4f50f3c6, reversing
changes made to e4e2bcce75b85fb8c1c49509a17bd5dfe6034c32.

Conflicts:
	activerecord/CHANGELOG.md
	activerecord/lib/active_record/relation/calculations.rb
	activerecord/test/cases/calculations_test.rb
bumping to rc2
Merge pull request #9616 from exviva/multiple_select_name_double_square_brackets

Fix incorrectly appended square brackets to a multiple select box

Before:

    select(:category, [], {}, {:multiple => true, :name => "post[category][]"})
    # => <select name="post[category][][]" ...>

After:

    select(:category, [], {}, {:multiple => true, :name => "post[category][]"})
    # => <select name="post[category][]" ...>

Conflicts:
	actionpack/CHANGELOG.md
	actionpack/lib/action_view/helpers/tags/base.rb
	actionpack/test/template/form_options_helper_test.rb
stop calling to_sym when building arel nodes [CVE-2013-1854]
fix incorrect ^$ usage leading to XSS in sanitize_css [CVE-2013-1855]
JDOM XXE Protection [CVE-2013-1856]

Conflicts:
	activesupport/test/xml_mini/jdom_engine_test.rb
fix protocol checking in sanitization [CVE-2013-1857]

Conflicts:
	actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb
do not freeze NumberHelper defaults.

Closes #9767.
Merge pull request #9768 from senny/do_not_freeze_number_helper_defaults

Do not freeze NumberHelper defaults
bumping to 3.2.13
Merge branch '3-2-13' into 3-2-stable

* 3-2-13:
  bumping to 3.2.13
  fix protocol checking in sanitization [CVE-2013-1857]
  JDOM XXE Protection [CVE-2013-1856]
  fix incorrect ^$ usage leading to XSS in sanitize_css [CVE-2013-1855]
  stop calling to_sym when building arel nodes [CVE-2013-1854]
  Merge pull request #9616 from exviva/multiple_select_name_double_square_brackets
  bumping to rc2
  Revert "Merge pull request #8209 from senny/backport_8176"
  Freeze columns only once per Result
  Preparing for 3.2.13.rc1 release
  Update CHANGELOGs for 3.2.13 release.

Conflicts:
	actionmailer/CHANGELOG.md
	actionpack/CHANGELOG.md
	activemodel/CHANGELOG.md
	activeresource/CHANGELOG.md
	activesupport/CHANGELOG.md
	railties/CHANGELOG.md
Fix changelog conflicts and remove release dates [ci skip]
Fix method name indent [ci skip]
Bring back test and changelog entry from #pluck method and select clause
Add release dates to documentation [ci skip]

Set "March 18, 2013" as the release date for 3.2.13
Merge pull request #9785 from claudiob/add-3-2-13-release-date-to-changelogs

Add release dates to documentation [ci skip]
Change @env_config to @app_env_config

Moral of the story: One must be careful about lazily initializing
instance variables when subclassing.

I would like to draw your attention to https://github.com/rails/rails/issues/4652 where
the reader will see that there appears to be some kind of initialization issue
in rails.

The source of this issue is that:
1) Engine#env_config contains "@env_config ||= ..."
2) Application#env_config contains "@env_config ||= ..."
3) Threads are in the picture
4) Thread A calls Application#env_config, which super's to Engine#env_config
5) After Engine#env_config returns but before Application#env_config sets @env_config again, Thread B begins running
6) Thread B calls Application#env_config
7) Thread B finds @env_config to contain a value (the one set by Engine#env_config) and returns it
8) Thread B blows up because key set by Application#env_config are there.
9) People report bugs with puma, thin, rainbows, webrick, etc
10) Evan becomes tired of seeing these bugs
11) Evan pours himself a stiff drink, puts on Top Gear(tm), and begins debugging
12) Evan finds the source of the bug
13) Evan authors a PR
14) RIGHT NOW.

The bug is fixed by simply using a different ivar name in the methods.
Alternately, Engine#env_config could just return a new Hash each time, not memoizing into @env_config.

I bid you adieu.