[Translation:update][Xliff Dumper] added target-language.
[HttpFoundation] Added a switch to delete file after the response is send
removed defaults from PHPUnit configuration
updated CHANGELOG for 2.5.1
updated VERSION for 2.5.1
bumped Symfony version to 2.4.8
bumped Symfony version to 2.5.2
minor #11344 remove defaults from PHPUnit configuration (craue)

This PR was merged into the 2.3 branch.

Discussion
----------

remove defaults from PHPUnit configuration

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

Follow-up to #11329.

Commits
-------

afc4930 removed defaults from PHPUnit configuration
[HttpFoundation] Remove content-related headers if content is empty
bug #11244 [HttpFoundation] Remove body-related headers when sending the response, if body is empty (SimonSimCity)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #11244).

Discussion
----------

[HttpFoundation] Remove body-related headers when sending the response, if body is empty

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

I've updated the implementation for informational and 204 or 304 responses. They will now, as they have no content, not return headers like `content-type` or `content-length`.

I'm unsure about `content-length` - we could also set it hardcoded to zero ... but I thought, that (because the specs say that it just can't have a response-body) the system should not return anything here.

Commits
-------

9dbe89d [HttpFoundation] Remove content-related headers if content is empty
fixed CS
Merge branch '2.3' into 2.4

* 2.3:
  fixed CS
  [HttpFoundation] Remove content-related headers if content is empty
  removed defaults from PHPUnit configuration
added missing test
Merge branch '2.4' into 2.5

* 2.4:
  added missing test
  fixed CS
  [HttpFoundation] Remove content-related headers if content is empty
  bumped Symfony version to 2.4.8
  removed defaults from PHPUnit configuration

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

* 2.5:
  added missing test
  fixed CS
  [HttpFoundation] Remove content-related headers if content is empty
  bumped Symfony version to 2.5.2
  bumped Symfony version to 2.4.8
  updated VERSION for 2.5.1
  updated CHANGELOG for 2.5.1
  removed defaults from PHPUnit configuration

Conflicts:
	src/Symfony/Component/HttpKernel/Kernel.php
feature #11212 [HttpFoundation] Added a switch to delete file after the response is send (WybrenKoelmans)

This PR was merged into the 2.6-dev branch.

Discussion
----------

[HttpFoundation] Added a switch to delete file after the response is send

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | N/A
| License       | MIT
| Doc PR        | symfony/symfony-docs#3975

I have not done any Unit Tests for this code as I suspect there may already be a way to solve my problem of deleting a file after the request was sent. Is it possible to use `sendContent` and delete the file after that? My attempts were unsuccessful.

If this code is desirable, please assist me in how I would write an unit test for this. Thanks.

TODO:
- [x] Add unit tests
- [x] Update documentation
- [x] Mention that using `X-Sendfile` will overwrite deleteFileAfterSend

Commits
-------

1fff158 [HttpFoundation] Added a switch to delete file after the response is send
[Filesystem] Throw Exception on copying from an unreadable file or to an unwritable file
feature #10960 [Filesystem] Throw Exception on copying from an unreadable file or to an unwritable file (djotto)

This PR was squashed before being merged into the 2.6-dev branch (closes #10960).

Discussion
----------

[Filesystem] Throw Exception on copying from an unreadable file or to an unwritable file

| Q  | A |
| ------------- | ------------- |
| Bug fix?  | No  |
| New feature?  | No  |
| BC breaks? | No |
| Deprecations? | No |
| Tests pass? | Yes |
| Fixed tickets | |
| License | MIT |

In certain circumstances (overwrite set to true, target file not writable), Filesystem->copy() would return success even though the file was not successfully copied. Unit tests included.

Commits
-------

cd5da9b [Filesystem] Throw Exception on copying from an unreadable file or to an unwritable file
[Translation:update][Xliff Dumper] Reviewed code and replaced underscore by hyphen
feature #11371 [Translation:update][Xliff Dumper] added target-language. (aitboudad, ClementGautier)

This PR was merged into the 2.6-dev branch.

Discussion
----------

[Translation:update][Xliff Dumper] added target-language.

Q | A
------------ | -------------
Bug fix? | yes
New feature? | yes
BC breaks? | no
Deprecations? | no
Tests pass? | yes
Fixed tickets | #11218
License | MIT

Complete this PR : https://github.com/symfony/symfony/pull/11252

Commits
-------

fdc3fb1 [Translation:update][Xliff Dumper] Reviewed code and replaced underscore by hyphen
1951412 [Translation:update][Xliff Dumper] added target-language.