updated CHANGELOG for 2.3.22
update CONTRIBUTORS for 2.3.22
updated VERSION for 2.3.22
fixed typo
bumped Symfony version to 2.3.23
[FrameworkBundle] cache:clear command fills *.php.meta files with wrong data
bug #12137 [FrameworkBundle] cache:clear command fills *.php.meta files with wrong data (Strate)

This PR was submitted for the 2.5 branch but it was merged into the 2.3 branch instead (closes #12137).

Discussion
----------

[FrameworkBundle] cache:clear command fills *.php.meta files with wrong data

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #12110
| License       | MIT

Test and fix of ticket #12110

Commits
-------

76273bf [FrameworkBundle] cache:clear command fills *.php.meta files with wrong data
Make `\Request::get` more performant.
Fix typo
reformat code as suggested by @fabpot
minor #12537 [HttpFoundation] Make Request::get() more performant (KorvinSzanto, xabbuh)

This PR was submitted for the 2.7 branch but it was merged into the 2.3 branch instead (closes #12537).

Discussion
----------

[HttpFoundation] Make Request::get() more performant

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

This finishes the work started by @KorvinSzanto in #12369.

Commits
-------

3039935 reformat code as suggested by @fabpot
ad64223 Fix typo
4162713 Make `\Request::get` more performant.
backport #12489
Rename Symfony2 to Symfony
Fix initialized() with aliased services
bug #12570 Fix initialized() with aliased services (Daniel Wehner)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #12570).

Discussion
----------

Fix initialized() with aliased services

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #12569
| License       | MIT
| Doc PR        |

Commits
-------

a18b6d1 Fix initialized() with aliased services
minor #12565 Rename Symfony2 to Symfony (romainneutron)

This PR was merged into the 2.3 branch.

Discussion
----------

Rename Symfony2 to Symfony

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

Replaces #12563

Commits
-------

0a76b7e 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
[Debug] fix error message on double exception
bug #12553 [Debug] fix error message on double exception (nicolas-grekas)

This PR was submitted for the 2.6 branch but it was merged into the 2.3 branch instead (closes #12553).

Discussion
----------

[Debug] fix error message on double exception

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

Commits
-------

1ed7606 [Debug] fix error message on double exception
Fixed typos