[Locale] Fix failing `StubIntlDateFormatter` in PHP 5.5
[Locale] Adjust `StubIntlDateFormatter` to have new methods added in PHP 5.5
merged branch stloyd/feature/travis_php55 (PR #6552)

This PR was merged into the 2.0 branch.

Commits
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73d9cef [Locale] Adjust `StubIntlDateFormatter` to have new methods added in PHP 5.5
b2ce983 [Locale] Fix failing `StubIntlDateFormatter` tests in PHP 5.5
913b564 [Locale] Fix failing `StubIntlDateFormatter` in PHP 5.5
8ae773b [Form] Fix failing `MonthChoiceList` in PHP 5.5
f4ce2f1 Update .travis.yml

Discussion
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[2.0] Add testing of PHP 5.5 on Travis-CI & fix failing code
Merge branch '2.0' into 2.1

* 2.0:
  Restrict Monolog version to be in version <1.3
  [Console] Make getTerminalWith & getTerminalHeight public
  [DependencyInjection] fixed PhpDumper optimizations when an inlined service depends on the current one indirectly
  [DependencyInjection] fixed PhpDumper when an inlined service definition has some properties
  [DependencyInjection] added some tests for PhpDumper when the container is compiled
  [DependencyInjection] fixed CS
  [Locale] Adjust `StubIntlDateFormatter` to have new methods added in PHP 5.5
  [Locale] Fix failing `StubIntlDateFormatter` tests in PHP 5.5
  [Locale] Fix failing `StubIntlDateFormatter` in PHP 5.5
  [Form] Fix failing `MonthChoiceList` in PHP 5.5
  Update .travis.yml

Conflicts:
	src/Symfony/Bridge/Monolog/composer.json
	src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9.php
	src/Symfony/Component/Form/Extension/Core/ChoiceList/MonthChoiceList.php
	tests/Symfony/Tests/Component/DependencyInjection/Fixtures/yaml/services9.yml