Make getNode function public

The getNode function should be public so that DomElement objects can be accessed directly if need be.
[Process] Added ProcessBuilder::addEnvironmentVariables
[FrameworkBundle] The config:dump-reference command shows the list of bundles with the table helper
[Form] check the required output timezone against the actual timezone
of the input datetime object, rather than the expected timezone supplied
[Yaml] Fixed filename in the ParseException message
[Translation] Added support for JSON format (both loader and dumper).
[DomCrawler] Added missing docblocks and removed unneeded return annotation.
[Translation] Removed an unneeded return annotation.
merged branch jakzal/docblock-cleanup (PR #9028)

This PR was merged into the 2.2 branch.

Discussion
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[Translation] Removed a @return annotation

This is the only `@return null` left...

Commits
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d6f4def [Translation] Removed an unneeded return annotation.
merged branch jakzal/domcrawler-missing-docblocks (PR #9025)

This PR was merged into the 2.2 branch.

Discussion
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[DomCrawler] Added missing docblocks and removed redundant type in a return annotation

| 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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d414213 [DomCrawler] Added missing docblocks and removed unneeded return annotation.
[Form] Fixed: "required" attribute is not added to <select> tag if no empty value
merged branch bschussek/issue8942 (PR #9030)

This PR was merged into the 2.3 branch.

Discussion
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[Form] Fixed: "required" attribute is not added to <select> tag if no empty value

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #8942
| License       | MIT
| Doc PR        | -

Commits
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a273e79 [Form] Fixed: "required" attribute is not added to <select> tag if no empty value
added missing method in the UPGRADE file for 2.2 (closes #8941)
LICENSE files moved to meta folders
merged branch peterkokot/patch-license (PR #9041)

This PR was submitted for the 2.1 branch but it was merged into the 2.2 branch instead (closes #9041).

Discussion
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Patch license

According to the documentation: http://symfony.com/doc/current/cookbook/bundles/best_practices.html#directory-structure I think LICENSE files should be in meta folders in Symfony core bundles as well. If I'm mistaken you can close this pull request. Thanks.

Commits
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66bafd2 LICENSE files moved to meta folders
HttpFoundation Request test for #8619
HttpFoundation RequestTest - Fixed indentation and removed comments
merged branch fturmel/patch-1 (PR #9038)

This PR was submitted for the 2.3 branch but it was merged into the 2.2 branch instead (closes #9038).

Discussion
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HttpFoundation Request : unit test to confirm #8619 issue fix

Commits
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ae4925b HttpFoundation RequestTest - Fixed indentation and removed comments
94ea510 HttpFoundation Request test for #8619
Typo fix

Small typo/grammar fix in class' comment
merged branch sarcasme/patch-1 (PR #9037)

This PR was submitted for the master branch but it was merged into the 2.2 branch instead (closes #9037).

Discussion
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Typo fix

Small typo/grammar fix in class' comment

Commits
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16f455e Typo fix