Made the exception message nicer
fix typos
Merge branch '2.4' into 2.5

* 2.4:
  fix typos
  [HttpKernel] add use statement for phpdoc
  Disabled the PHPUnit self-update on Travis
  [ClassLoader] simplified phpdoc
  [ClassLoader] Add a __call() method to XcacheClassLoader
  fix some minor typos in tests
  [Yaml] fixed mapping keys containing a quoted #
  Added fixture to test parsing of hash keys ending with a space and #
  [Filesystem Component] mkdir race condition fix #11626
  [Validator] reverted permissions change on translation files
  Fixed Factory services not within the ServiceReferenceGraph.
  [CssSelector] Fix URL to SimonSapin/cssselect repo
  [Validator] Fixed wrong translation keys/messages for Collection constraint. The error messages for a missing field and an unexpected field did not match the Contraint class
  [YAML] resolve variables in inlined YAML
  Disallow abstract definitions from doctrine event listener registration

Conflicts:
	src/Symfony/Component/Process/Tests/SigchildDisabledProcessTest.php
	src/Symfony/Component/Yaml/Inline.php
Merge branch '2.5'

* 2.5:
  fix typos
  [HttpKernel] add use statement for phpdoc
  fixed DateComparator if file does not exist
  Disabled the PHPUnit self-update on Travis
  fix mustRun() in sigchild environments
  [ClassLoader] simplified phpdoc
  [ClassLoader] Add a __call() method to XcacheClassLoader
  fix some minor typos in tests
  [Yaml] fixed mapping keys containing a quoted #
  Added fixture to test parsing of hash keys ending with a space and #
  [Validator] Pass strict argument into the strict email validator
  [Filesystem Component] mkdir race condition fix #11626
  [Validator] reverted permissions change on translation files
  Fixed Factory services not within the ServiceReferenceGraph.
  [CssSelector] Fix URL to SimonSapin/cssselect repo
  [Validator] Fixed wrong translation keys/messages for Collection constraint. The error messages for a missing field and an unexpected field did not match the Contraint class
  Remove hard dependency of RequestContext in AssetsExtension
  added useful reminder about form.vars.errors into UPGRADE-2.5 notes
  [YAML] resolve variables in inlined YAML
  Disallow abstract definitions from doctrine event listener registration

Conflicts:
	src/Symfony/Component/Yaml/Inline.php
	src/Symfony/Component/Yaml/Parser.php
	src/Symfony/Component/Yaml/Tests/InlineTest.php
minor #11684 [DX] Removed strict alias name check (WouterJ)

This PR was merged into the 2.6-dev branch.

Discussion
----------

[DX] Removed strict alias name check

Symfony allows to change the DI alias by overriding `Extension#getAlias()`, but it does throw an exception when it is anything else than the default. That doesn't sound nice and it makes it harder to change the alias. This can result in problems when the bundle is called WouterJEloquentBundle for instance (which has a default alias of `wouter_j_eloquent_bundle`, where I want it to be `wouterj_eloquent_bundle`).

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

Commits
-------

69d71c1 Made the exception message nicer