[Form] Check if IntlDateFormatter constructor returned a valid object before using it
[Process] Reduce I/O load on Windows platform
[DependencyInjection] Pass a Scope instance instead of a scope name.
[Process] Fixes issue #11421
[Process] Add test to verify fix for issue #11421
Bring code into standard
Optimize assertLocale regexp
minor #11441 [Translator] Optimize assertLocale regexp (Jérémy Derussé)

This PR was merged into the 2.3 branch.

Discussion
----------

[Translator] Optimize assertLocale regexp

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

Optimize regexp by remove unused variable and using anchored regex.
Thanks @Tobion

Commits
-------

537c39b Optimize assertLocale regexp
bug #11342 [2.3][Form] Check if IntlDateFormatter constructor returned a valid object before using it (romainneutron)

This PR was merged into the 2.3 branch.

Discussion
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[2.3][Form] Check if IntlDateFormatter constructor returned a valid object before using it

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

`IntlDateFormatter` constructor [may return false](http://www.php.net/manual/en/intldateformatter.create.php#refsect1-intldateformatter.create-returnvalues). This patches avoids fatal errors in these cases

This PR replaces #11334

Commits
-------

ebf967d [Form] Check if IntlDateFormatter constructor returned a valid object before using it
bug #11120 [2.3][Process] Reduce I/O load on Windows platform (romainneutron)

This PR was merged into the 2.3 branch.

Discussion
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[2.3][Process] Reduce I/O load on Windows platform

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

When using file handles, no `stream_select` call is done.
On linux platforms, `stream_select` introduce a sleep as it has 0.2s timeout, there is no such pause on Windows, producing lot's of disk I/Os when reading file handles

Commits
-------

ff0bb01 [Process] Reduce I/O load on Windows platform
[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
bug #11423 Pass a Scope instance instead of a scope name when cloning a container in the GrahpvizDumper (jakzal)

This PR was merged into the 2.3 branch.

Discussion
----------

Pass a Scope instance instead of a scope name when cloning a container in the GrahpvizDumper

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #11055
| License       | MIT
| Doc PR        | -

Commits
-------

6787669 [DependencyInjection] Pass a Scope instance instead of a scope name.
bug #11425 Fix issue described in #11421 (Ben, ben-rosio)

This PR was merged into the 2.3 branch.

Discussion
----------

Fix issue described in #11421

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #11421
| License       | MIT
| Doc PR        | NA

This pull request fixes the issue described in #11421.  It also adds a test for the issue.  The issue is present in 2.0 forward, but I decided to fix it on the 2.3 branch so that I could also write a test for it (2.0 had no tests for the Process component, and 2.1 and 2.2 didn't have tests for the `ExecutableFinder` class).

Commits
-------

4cf50e8 Bring code into standard
9f4313c [Process] Add test to verify fix for issue #11421
02eb765 [Process] Fixes issue #11421
Fixed server HTTP_HOST port uri conversion
[BrowserKit] refactor code and fix unquoted regex
bug #11469  [BrowserKit] Fixed server HTTP_HOST port uri conversion (bcremer, fabpot)

This PR was merged into the 2.3 branch.

Discussion
----------

 [BrowserKit] Fixed server HTTP_HOST port uri conversion

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #11356
| License       | MIT
| Doc PR        | n/a

See #11356

Commits
-------

103fd88 [BrowserKit] refactor code and fix unquoted regex
f401ab9 Fixed server HTTP_HOST port uri conversion
fix signal handling in wait()

wait() throws an exception when the process was terminated by a signal.
This should not happen when the termination was requested by calling
either the stop() or the signal() method (for example, inside a callback
which is passed to wait()).
[Process] Fix unit tests in sigchild environment