Merge branch '2.3' into 2.4

* 2.3:
  removed unneeded use statements
  Prepend Child Bundle paths before the parent
  [Routing] add unit tests for Symfony\Component\Routing\RequestContext class

Conflicts:
	src/Symfony/Component/Form/Extension/Csrf/CsrfExtension.php
	src/Symfony/Component/HttpKernel/DataCollector/TimeDataCollector.php
	src/Symfony/Component/Validator/ConstraintValidatorFactory.php

Author: fabpot

Encoder/BCryptPasswordEncoder.php

@@ -11,7 +11,6 @@
 
 namespace Symfony\Component\Security\Core\Encoder;
 
-use Symfony\Component\Security\Core\Encoder\BasePasswordEncoder;
 use Symfony\Component\Security\Core\Exception\BadCredentialsException;
 
 /**

Exception/NonceExpiredException.php

@@ -11,8 +11,6 @@
 
 namespace Symfony\Component\Security\Core\Exception;
 
-use Symfony\Component\Security\Core\Exception\AuthenticationException;
-
 /**
  * NonceExpiredException is thrown when an authentication is rejected because
  * the digest nonce has expired.