updated version to 3.0
[HttpKernel] Removed deprecated Kernel::init() method
Merge branch '2.7'

* 2.7:
  Update filesystem readme.md to include exists method
  Add machine readable events
  Fixed minor typo
  [FrameworkBundle] Fix server start in case the PHP binary is not found
  Update UPGRADE-2.6.md
  [HttpKernel][2.6] Adding support for invokable controllers in the RequestDataCollector
  fixed typo
  [Translations] Added missing Hebrew language trans-unit sources
  [DependencyInjection] inlined factory not referenced
  Fixed case for empty folder
  Fixed whitespace control for password form widget
  [Routing] correctly initialize condition as string
feature #12461 [HttpKernel] Removed deprecated Kernel::init() method (saro0h)

This PR was merged into the 3.0-dev branch.

Discussion
----------

[HttpKernel] Removed deprecated Kernel::init() method

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

Commits
-------

37b49e1 [HttpKernel] Removed deprecated Kernel::init() method
Merge branch '2.7'

* 2.7:
  Extract an AbstractEventDispatcherTest from EventDispatcherTest and also use it in ContainerAwareEventDispatcherTest
  [SecurityBundle] Authentication entry point is only registered with firewall exception listener, not with authentication listeners
  be smarter when guessing the document root
  Azerbaijani locale
  Fixed grammar error in docblock
  [HttpKernel] fix parse error in DumpDataCollector
  [TwigBundle/DebugBundle] move dump extension & cleanups
  Adjust upgrade file rendering
  [Bridge/Propel1] Changed deps to accepts all upcoming propel1 versions
  compare version using PHP_VERSION_ID
  [Form] Add doc for FormEvents
  *_timezone changes also affect the BirthdayType
  don't override internal PHP constants
  Drop support for model_timezone and view_timezone options in TimeType and DateType.
  [DomCrawler] Added support for link tags in the Link class
  [Session] Fix parameter names in WriteCheckSessionHandler
  Add consistency with request type checking
  [FrameworkBundle] Fix server run in case the router script does not exist
[2.6] Remove possible call_user_func()
[2.3] Remove possible call_user_func()
[2.5] Remove possible call_user_func()
Merge branch '2.7'

* 2.7: (36 commits)
  [Debug] fix error message on double exception
  [Validator] make DateTime objects represented as strings in the violation message.
  [RFC] [DebugBundle] [HttpKernel] Avoid using container as dependency for DumpListener
  Upgrade information for the Translation component regarding the new LoggingTranslator class.
  [WebProfilerBundle] Remove usage of app.request in search bar template
  Fix initialized() with aliased services
  fix data type in docblock
  Rename Symfony2 to Symfony
  bumped Symfony version to 2.6.0
  updated VERSION for 2.6.0-BETA2
  updated CHANGELOG for 2.6.0-BETA2
  [Debug] fix ENT_SUBSTITUTE usage
  compare version using PHP_VERSION_ID
  backport #12489
  remove an unneeded check
  Remove block submit_widget
  reformat code as suggested by @fabpot
  Fix typo
  Make `\Request::get` more performant.
  properly set request attributes in controller test
  ...
[Process] Remove deprecated methods
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
  ...
Merge branch '2.7'

* 2.7:
  fixed wrong merge
Merge branch '2.7'

* 2.7:
  [DependencyInjection] keep some of the reverted perf optim
  Revert "minor #10241 [DependencyInjection] made some perf improvements (fabpot)"
  Remove deprecated class
 [Monolog Bridge] Remove deprecated log methods + add unit tests
feature #12731  [Monolog Bridge] Remove deprecated log methods + add unit tests (FlorianLB)

This PR was squashed before being merged into the 3.0-dev branch (closes #12731).

Discussion
----------

 [Monolog Bridge] Remove deprecated log methods + add unit tests

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

Remove deprecated methods. I took the opportunity to add some missing unit tests.

Commits
-------

9ecfc84  [Monolog Bridge] Remove deprecated log methods + add unit tests
feature #12697 [3.0][Process] Remove deprecated methods (romainneutron)

This PR was merged into the 3.0-dev branch.

Discussion
----------

[3.0][Process] Remove deprecated methods

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

Commits
-------

e2334d9 [Process] Remove deprecated methods
Fixed #12845 adding a listener to an event that is currently being dispatched will not result into a fatal error in TraceableEventDispatcher [EventDispatcher]
[DependencyInjection] backport perf optim

Conflicts:
	src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
	src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services11.php
	src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php
	src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9.php
	src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
[HttpKernel] Remove unused method Kernel::isClassInActiveBundle

Follow-up of #11869
[DependencyInjection] perf optim: call dirname() at most 5x