Merge branch '2.3'

* 2.3:
  fixes RequestDataCollector bug, visible when used on Drupal8
  [Console] fixed exception rendering when nested styles
  [Console] added some more information about OutputFormatter::replaceStyle()
  [Console] fixed the formatter for single-char tags
  [Console] Escape exception message during the rendering of an exception
  [DomCrawler] fixed HTML5 form attribute handling
  Making tests pass on mac os x without this change tests would fail under mac os x at least in 10.8.2
  [BrowserKit] Fixed the handling of parameters when redirecting
  [Process] Properly close pipes after a Process::stop call
  fixed bytes conversion when used on 32-bits systems
  Typo fix
  HttpFoundation RequestTest - Fixed indentation and removed comments
  HttpFoundation Request test for #8619
  LICENSE files moved to meta folders
  added missing method in the UPGRADE file for 2.2 (closes #8941)
  [Form] Fixed: "required" attribute is not added to <select> tag if no empty value
  [Translation] Removed an unneeded return annotation.
  [DomCrawler] Added missing docblocks and removed unneeded return annotation.

Conflicts:
	src/Symfony/Component/Process/Tests/AbstractProcessTest.php
[Security] Split the component into 3 sub-components Core, ACL, HTTP
updated the composer install command to reflect changes in Composer
[Security] [SimpleAuthenticationProvider] Delete unnecessary "use" statements
merged branch fabpot/composer-install-fix (PR #9063)

This PR was merged into the 2.2 branch.

Discussion
----------

updated the composer install command to reflect changes in Composer

Commits
-------

c2144df updated the composer install command to reflect changes in Composer
[Security] copied the Resources/ directory to Core/Resources/
[Security] fixed README files
[Config] Create XML Reference Dumper
merged branch WouterJ/dump_xml (PR #8635)

This PR was squashed before being merged into the master branch (closes #8635).

Discussion
----------

[Config] Create XML Reference Dumper

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | yes
| Tests pass?   | no
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Only Yaml was supported. This PR adds support for XML. This makes it easier to test XML schema's (see symfony-cmf/MenuBundle#114 ), helps us at the docs with our configuration reference and helps others using XML with symfony.

## Todo

 - [x] Prototyped arrays don't work properly
 - [x] Add comments (see Yaml dumper)
 - [x] Add namespaces support

## Side effects

I've moved the reference dumpers to their own namespace and renamed the original reference dumper to `YamlReferenceDumper`. The old one is kept for BC, but deprecated.

/cc @dantleech

Commits
-------

05e9ca7 [Config] Create XML Reference Dumper
fixed previous merge (refs #8635)
[Security] removed unneeded hard dependencies in Core
merged branch fabpot/security-split (PR #9064)

This PR was merged into the master branch.

Discussion
----------

[Security] Split the component into 3 sub-components Core, ACL, HTTP

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #9047, #8848
| License       | MIT
| Doc PR        | -

The rationale behind this PR is to be able to use any of the sub components without requiring all the dependencies of the other sub components. Specifically, I'd like to use the core utils for an improved CSRF protection mechanism (#6554).

Commits
-------

14e9f46 [Security] removed unneeded hard dependencies in Core
5dbec8a [Security] fixed README files
62bda79 [Security] copied the Resources/ directory to Core/Resources/
7826781 [Security] Split the component into 3 sub-components Core, ACL, HTTP
merged branch alexpods/patch-4 (PR #9066)

This PR was merged into the master branch.

Discussion
----------

[Security] Delete unnecessary "use" statements

 Delete unnecessary "use" statements in SimpleAuthenticationProvider

Commits
-------

82de3ba [Security] [SimpleAuthenticationProvider] Delete unnecessary "use" statements
[HttpKernel] remove unneeded strtoupper
[Security] fix typo
[FrameworkBundle] made sure that the debug event dispatcher is used everywhere
merged branch Tobion/routerlistener-strtoupper (PR #9070)

This PR was merged into the 2.2 branch.

Discussion
----------

[HttpKernel] remove unneeded strtoupper

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| License       | MIT

It is already uppercased by the exception itself: https://github.com/symfony/symfony/blob/2.2/src/Symfony/Component/Routing/Exception/MethodNotAllowedException.php#L32

Commits
-------

0b6519f [HttpKernel] remove unneeded strtoupper
[Security] remove unused logger
Remove unused use statement
merged branch fabpot/event-dispatcher-debug (PR #9068)

This PR was merged into the 2.2 branch.

Discussion
----------

[FrameworkBundle] made sure that the debug event dispatcher is used everywhere

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #6686, #7673
| License       | MIT
| Doc PR        | n/a

Commits
-------

f65a526 [FrameworkBundle] made sure that the debug event dispatcher is used everywhere