unified return null usages
[Finder] Marked test skipped when ftp stream wrapper is not available
[Doctrine Bridge] fix DbalSessionHandler for high concurrency, interface compliance, compatibility with all drivers (oci8, mysqli, pdo with mysql, sqlsrv, sqlite)
[HttpFoundation] update phpdoc of SessionHandlerInterface and unify parameters of all handlers according to interface
[HttpFoundation] status 201 is allowed to have a body
[Security] fix DBAL connection typehint
updated doc
minor #10724 An omission of updating the doc (issei-m)

This PR was merged into the 2.4 branch.

Discussion
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An omission of updating the doc

Commits
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b1202b0 updated doc
bug #10723 [Security] fix DBAL connection typehint (Tobion)

This PR was merged into the 2.3 branch.

Discussion
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[Security] fix DBAL connection typehint

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

Commits
-------

c05edcc [Security] fix DBAL connection typehint
[Process] Fix #10681, process are failing on Windows Server 2003
[HttpFoundation] factorize out the way output buffers should be closed
Update PackageInterface.php
minor #10736 Update PackageInterface.php (ibasaw)

This PR was merged into the 2.5-dev branch.

Discussion
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Update PackageInterface.php

found a typo

Commits
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e043329 Update PackageInterface.php
fixed typo
Fix doc blocks
Textarea value should default to empty string instead of null.
bug #10733 [DomCrawler] Textarea value should default to empty string instead of null. (Berdir)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #10733).

Discussion
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[DomCrawler] Textarea value should default to empty string instead of null.

Noticed this when working on Updating Behat/Mink/Goutte to Guzzle 4, see https://github.com/fabpot/Goutte/pull/140 and https://github.com/Behat/MinkGoutteDriver/pull/34.

Testing this with Drupal 8, trying to submit a Form which has empty form elements, the $value in a TextArea form elements defaults to null, then we end up with those in getValues() and then http_build_query() creates an empty string for those. That results in array keys like ['' => false]. This is then passed through to Guzzle, which ends up in MessageFactory::addPostData(), goes into the else creates and tries to create file with those values, which will throw an exception in GuzzleHttp\Stream::create(): with "Invalid resource type false".

I think the correct fix is to default to an empty string instead of null.

Will also need tests,

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

Commits
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f672564 Textarea value should default to empty string instead of null.
minor #10737 [2.3] Fix doc blocks (romainneutron)

This PR was merged into the 2.3 branch.

Discussion
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[2.3] Fix doc blocks

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

Commits
-------

de5d627 Fix doc blocks
[Validator] added Japanese translation
minor #10732 [Validator] added Japanese translation (issei-m)

This PR was submitted for the master branch but it was merged into the 2.4 branch instead (closes #10732).

Discussion
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[Validator] added Japanese translation

| 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
-------

7b91e03 [Validator] added Japanese translation