updated VERSION for 2.6.0
bumped Symfony version to 2.6.1
Adjust error_reporting to allow deprecation messages for 3.0
[Hackday] [2.7] Add a deprecation note about RegisterListenersPass
minor #12645 [Hackday] [2.7] Add a deprecation note about RegisterListenersPass (jzawadzki)

This PR was squashed before being merged into the 2.7 branch (closes #12645).

Discussion
----------

[Hackday] [2.7] Add a deprecation note about RegisterListenersPass

| Q             | A
| ------------- | ---
| Fixed tickets | #12633
| License       | MIT

Commits
-------

9938179 [Hackday] [2.7] Add a deprecation note about RegisterListenersPass
[Hackday] [2.7] Add a deprecation note about Debug component classes

Resolves #12623
Hackday deprecated 12621
Docblock fixes
[DependencyInjection] make paths relative to __DIR__ in the generated container
bug #12784 [DependencyInjection] make paths relative to __DIR__ in the generated container (nicolas-grekas)

This PR was merged into the 2.3 branch.

Discussion
----------

[DependencyInjection] make paths relative to __DIR__ in the generated container

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #6484, #3079, partially #9238, #10894, #10999
| License       | MIT
| Doc PR        | n/a

This is an alternative approach to #10999 for removing absolute paths from the generated container:
instead of trying to fix the container file after it has been dumped, telling to the PhpDumper where its output will be written allows it to replace parts of strings by an equivalent value based on `__DIR__`.
This should be safe, thus the PR is on 2.3.

Commits
-------

edd7057 [DependencyInjection] make paths relative to __DIR__ in the generated container
PSR-2 fixes
Merge branch '2.3' into 2.5

* 2.3:
  Configure firewall's kernel exception listener with configured entry point or a default entry point
  PSR-2 fixes
  [DependencyInjection] make paths relative to __DIR__ in the generated container
  Fixed the syntax of a composer.json file
  Fixed the symfony/config version constraint
  Tweaked the password-compat version constraint
  Docblock fixes
  define constant only if it wasn't defined before
  Fix incorrect spanish translation
  Fixed typos

Conflicts:
	composer.json
	src/Symfony/Bridge/Twig/TwigEngine.php
	src/Symfony/Bundle/FrameworkBundle/Controller/Controller.php
	src/Symfony/Bundle/FrameworkBundle/Templating/Loader/FilesystemLoader.php
	src/Symfony/Bundle/FrameworkBundle/composer.json
	src/Symfony/Component/Console/Descriptor/MarkdownDescriptor.php
	src/Symfony/Component/Console/Helper/TableHelper.php
	src/Symfony/Component/Console/Tests/Helper/HelperSetTest.php
	src/Symfony/Component/Debug/ErrorHandler.php
	src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
	src/Symfony/Component/Finder/Tests/Iterator/RecursiveDirectoryIteratorTest.php
	src/Symfony/Component/Form/Tests/Extension/Core/DataMapper/PropertyPathMapperTest.php
	src/Symfony/Component/HttpFoundation/Response.php
	src/Symfony/Component/HttpFoundation/StreamedResponse.php
	src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
	src/Symfony/Component/HttpKernel/Controller/ControllerResolverInterface.php
	src/Symfony/Component/HttpKernel/Debug/TraceableEventDispatcher.php
	src/Symfony/Component/HttpKernel/Fragment/RoutableFragmentRenderer.php
	src/Symfony/Component/HttpKernel/Tests/DataCollector/RequestDataCollectorTest.php
	src/Symfony/Component/Intl/NumberFormatter/NumberFormatter.php
	src/Symfony/Component/Process/Process.php
	src/Symfony/Component/Process/Tests/AbstractProcessTest.php
	src/Symfony/Component/PropertyAccess/PropertyAccessorBuilder.php
	src/Symfony/Component/Routing/Tests/Fixtures/validpattern.php
	src/Symfony/Component/Security/Http/RememberMe/TokenBasedRememberMeServices.php
	src/Symfony/Component/Security/composer.json
	src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
	src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php
	src/Symfony/Component/Stopwatch/StopwatchEvent.php
	src/Symfony/Component/Stopwatch/StopwatchPeriod.php
	src/Symfony/Component/Templating/PhpEngine.php
	src/Symfony/Component/Templating/TemplateReference.php
	src/Symfony/Component/Templating/TemplateReferenceInterface.php
	src/Symfony/Component/Translation/TranslatorInterface.php
	src/Symfony/Component/Validator/ConstraintViolation.php
	src/Symfony/Component/Validator/ExecutionContextInterface.php
	src/Symfony/Component/Validator/Mapping/ClassMetadata.php
	src/Symfony/Component/Validator/MetadataFactoryInterface.php
Merge branch '2.5' into 2.6

* 2.5:
  Configure firewall's kernel exception listener with configured entry point or a default entry point
  PSR-2 fixes
  [DependencyInjection] make paths relative to __DIR__ in the generated container
  Fixed the syntax of a composer.json file
  Fixed the symfony/config version constraint
  Tweaked the password-compat version constraint
  Docblock fixes
  Remove dialog usage
  define constant only if it wasn't defined before
  Fix incorrect spanish translation
  Fixed typos

Conflicts:
	src/Symfony/Bundle/TwigBundle/Controller/ExceptionController.php
	src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
	src/Symfony/Component/OptionsResolver/Options.php
	src/Symfony/Component/OptionsResolver/OptionsResolverInterface.php
	src/Symfony/Component/Process/ProcessPipes.php
	src/Symfony/Component/Security/Http/Tests/Firewall/RememberMeListenerTest.php
	src/Symfony/Component/Serializer/Normalizer/DenormalizableInterface.php
	src/Symfony/Component/Validator/ConstraintViolation.php
	src/Symfony/Component/Yaml/Inline.php
	src/Symfony/Component/Yaml/Parser.php
Merge branch '2.6' into 2.7

* 2.6:
  Configure firewall's kernel exception listener with configured entry point or a default entry point
  PSR-2 fixes
  [DependencyInjection] make paths relative to __DIR__ in the generated container
  [FrameworkBundle][Router Cmd] use debug namespace.
  [FrameworkBundle] Update deprecated service call
  Removed a dev annotation from a version constraint
  Fixed the syntax of a composer.json file
  Fixed the symfony/config version constraint
  Tweaked the password-compat version constraint
  Docblock fixes
  [Filesystem] fix lock file permissions
  Remove dialog usage
  define constant only if it wasn't defined before
  Fix incorrect spanish translation
  Fixed typos
  Fixed a docblock
  bumped Symfony version to 2.6.1
  updated VERSION for 2.6.0
  updated CHANGELOG for 2.6.0
  removed unneeded check

Conflicts:
	src/Symfony/Component/HttpKernel/Kernel.php
Merge branch '2.7'

* 2.7: (65 commits)
  Configure firewall's kernel exception listener with configured entry point or a default entry point
  PSR-2 fixes
  [DependencyInjection] make paths relative to __DIR__ in the generated container
  [FrameworkBundle][Router Cmd] use debug namespace.
  [FrameworkBundle] Update deprecated service call
  Fix PHP Fatal error:  Cannot call constructor in symfony/console/Symfony/Component/Console/Helper/DialogHelper.php on line 37
  Removed a dev annotation from a version constraint
  Fixed the syntax of a composer.json file
  Fixed the symfony/config version constraint
  Tweaked the password-compat version constraint
  Docblock fixes
  Append to PR #12737 referring Ticket #12704
  Issue #12658 Add a deprecation note about Translator's setFallbackLocale...
  Issue #12606 Adding warning logs about the deprecation of [...]/Tests/FormIntegration...
  Hackday deprecated 12621
  Added deprecation log for validate and validateValue on ExecutionContext...
  [Console] [Hackday] [2.7]  Add a deprecation note about ProgressHelper
  [Hackday][2.7] Add a deprecation note about MetadataInterface's accept() method
  [Validator] Added a deprecation note about setPropertyAccessor #12698
  [Locale] Adding a deprecation note about the Locale component
  ...