[FrameworkBundle] cache:clear command fills *.php.meta files with wrong data
be smarter when guessing the document root
Merge branch '2.3' into 2.5

* 2.3:
  reformat code as suggested by @fabpot
  Fix typo
  Make `\Request::get` more performant.
  [FrameworkBundle] cache:clear command fills *.php.meta files with wrong data
  bumped Symfony version to 2.3.23
  fixed typo
  updated VERSION for 2.3.22
  update CONTRIBUTORS for 2.3.22
  updated CHANGELOG for 2.3.22

Conflicts:
	src/Symfony/Component/HttpKernel/Kernel.php
Merge branch '2.5' into 2.6

* 2.5:
  reformat code as suggested by @fabpot
  Fix typo
  Make `\Request::get` more performant.
  [Form][WebProfiler] Empty form names fix
  [FrameworkBundle] cache:clear command fills *.php.meta files with wrong data
  bumped Symfony version to 2.5.8
  updated VERSION for 2.5.7
  update CONTRIBUTORS for 2.5.7
  updated CHANGELOG for 2.5.7
  bumped Symfony version to 2.3.23
  fixed typo
  updated VERSION for 2.3.22
  update CONTRIBUTORS for 2.3.22
  updated CHANGELOG for 2.3.22

Conflicts:
	src/Symfony/Bundle/WebProfilerBundle/Resources/views/Collector/form.html.twig
	src/Symfony/Component/HttpKernel/Kernel.php
remove an unneeded check

It is already checked in the `isEnabled()` method if the current PHP
build is HHVM and the `server:run` command is never enabled then.
Thus, it's not needed to check for HHVM on every command execution.
backport #12489
compare version using PHP_VERSION_ID

This continues the work started in #12497 on the `2.3` branch.
Rename Symfony2 to Symfony
bug #12550 [FrameworkBundle] backport #12489 (xabbuh)

This PR was merged into the 2.3 branch.

Discussion
----------

[FrameworkBundle] backport #12489

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

Commits
-------

556eff1 backport #12489
minor #12554 compare version using PHP_VERSION_ID (xabbuh)

This PR was merged into the 2.5 branch.

Discussion
----------

compare version using PHP_VERSION_ID

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

This continues the work started in #12497 on the `2.3` branch.

Commits
-------

d2f846b compare version using PHP_VERSION_ID
Merge branch '2.3' into 2.5

* 2.3:
  [Debug] fix error message on double exception
  Fix initialized() with aliased services
  Rename Symfony2 to Symfony
  backport #12489

Conflicts:
	CONTRIBUTING.md
	src/Symfony/Bundle/FrameworkBundle/Command/ServerRunCommand.php
	src/Symfony/Bundle/TwigBundle/Loader/FilesystemLoader.php
Merge branch '2.5' into 2.6

* 2.5:
  [Debug] fix error message on double exception
  Fix initialized() with aliased services
  Rename Symfony2 to Symfony
  compare version using PHP_VERSION_ID
  backport #12489
  remove an unneeded check
Merge branch '2.6' into 2.7

* 2.6: (36 commits)
  [Debug] fix error message on double exception
  [Validator] make DateTime objects represented as strings in the violation message.
  [RFC] [DebugBundle] [HttpKernel] Avoid using container as dependency for DumpListener
  Upgrade information for the Translation component regarding the new LoggingTranslator class.
  [WebProfilerBundle] Remove usage of app.request in search bar template
  Fix initialized() with aliased services
  fix data type in docblock
  Rename Symfony2 to Symfony
  bumped Symfony version to 2.6.0
  updated VERSION for 2.6.0-BETA2
  updated CHANGELOG for 2.6.0-BETA2
  [Debug] fix ENT_SUBSTITUTE usage
  compare version using PHP_VERSION_ID
  backport #12489
  remove an unneeded check
  Remove block submit_widget
  reformat code as suggested by @fabpot
  Fix typo
  Make `\Request::get` more performant.
  properly set request attributes in controller test
  ...