[Validator] Simplified IBAN validation algorithm
[Validator] Fixed and simplified IsbnValidator
[Validator] Simplified IssnValidator
[Validator] Simplified and explained the LuhnValidator
[Validator] Added "{{ value }}" parameters where they were missing
[Validator] Fixed date-to-string conversion tests to match ICU 51
[Validator] Fixed CS
Allow exception bubbling in RememberMeListener
[Validator] do not call getter inside ExecutionContext to prevent unnecessary calls
[Validator] Renamed valueToString() to formatValue(); added missing formatValue() calls
[Translator] Use quote to surround invalid locale
minor #11464 [Translator] Use quote to surround invalid locale (lyrixx)

This PR was submitted for the 2.5 branch but it was merged into the 2.3 branch instead (closes #11464).

Discussion
----------

[Translator] Use quote to surround invalid locale

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

I got this message in one application (CLI):

```

  [InvalidArgumentException]
  Invalid locale: en_US .

```

It's not so easy to spot the issue.

Commits
-------

c9742ef [Translator] Use quote to surround invalid locale
Merge branch '2.3' into 2.4

* 2.3:
  [Translator] Use quote to surround invalid locale
  Optimize assertLocale regexp
  [Validator] Backported #11410 to 2.3: Object initializers are called only once per object
  [Translator][FrameworkBundle] Added @ to the list of allowed chars in Translator
  [Process] Reduce I/O load on Windows platform
  [Form] Check if IntlDateFormatter constructor returned a valid object before using it
Merge branch '2.4' into 2.5

* 2.4:
  [Translator] Use quote to surround invalid locale
  Optimize assertLocale regexp
  [ExpressionLanguage] Fixed an issue with # characters in double quoted string literals
  Add some tweaks to the pt_BR translations
  [Validator] Backported #11410 to 2.3: Object initializers are called only once per object
  [Translator][FrameworkBundle] Added @ to the list of allowed chars in Translator
  [Process] Reduce I/O load on Windows platform
  [Form] Check if IntlDateFormatter constructor returned a valid object before using it

Conflicts:
	src/Symfony/Component/Validator/Tests/ValidationVisitorTest.php
Merge branch '2.5'

* 2.5:
  [Translator] Use quote to surround invalid locale
  [Validator] Fixed memory leak in ValidatorBuilder
  [FrameworkBundle] changed KernelTestCase::getKernelClass() to check $_SERVER['KERNEL_DIR'] before invoking getPhpUnitXmlDir()
  Optimize assertLocale regexp
  [ExpressionLanguage] Fixed an issue with # characters in double quoted string literals
  [Validator] Fixed object initializers in 2.5 version of the Validator
  Add some tweaks to the pt_BR translations
  [Validator] Backported #11410 to 2.3: Object initializers are called only once per object
  [Translator][FrameworkBundle] Added @ to the list of allowed chars in Translator
  [Process] Reduce I/O load on Windows platform
  [Form] Check if IntlDateFormatter constructor returned a valid object before using it

Conflicts:
	src/Symfony/Component/Process/ProcessPipes.php
properly handle null data when denormalizing

If null is passed to denormalize(), no property values can be set on
the denormalized object. Additionally, this fixes passing values to
the denormalized object's constructor if the incoming data is an object.
feature #11173 [HttpFoundation] ResponseHeaderBag::clearCookie now accepts secure/httpOnly (adrienbrault)

This PR was merged into the 2.6-dev branch.

Discussion
----------

[HttpFoundation] ResponseHeaderBag::clearCookie now accepts secure/httpOnly

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

Commits
-------

83f4ac5 [HttpFoundation] ResponseHeaderBag::clearCookie now accepts secure/httpOnly
minor #11462 [HttpFoundation] moved test file to the right directory (fabpot)

This PR was merged into the 2.5 branch.

Discussion
----------

[HttpFoundation] moved test file to the right directory

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

Commits
-------

a260623 [HttpFoundation] moved test file to the right directory
bug #11448 [MonologBridge] fixed Console handler priorities (fabpot)

This PR was merged into the 2.4 branch.

Discussion
----------

[MonologBridge] fixed Console handler priorities

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #11432
| License       | MIT
| Doc PR        | n/a

alternative to symfony/symfony#11432

ping @Seldaek

Commits
-------

bdf874f [MonologBridge] fixed Console handler priorities
feature #11385 server:run command: provide more error information (xabbuh)

This PR was merged into the 2.6-dev branch.

Discussion
----------

server:run command: provide more error information

The server:run command didn't provide many information when the executed command exited unexpectedly. Now, the process' exit code is passed through and an error message is displayed.

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

This is, for example, useful, if you provide an invalid ip address/hostname on which the server couldn't listen.

Commits
-------

5ba40bf server:run command: provide more error information