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

Output/ConsoleOutput.php

@@ -12,7 +12,6 @@
 namespace Symfony\Component\Console\Output;
 
 use Symfony\Component\Console\Formatter\OutputFormatterInterface;
-use Symfony\Component\Console\Output\ConsoleOutputInterface;
 
 /**
  * ConsoleOutput is the default class for all CLI output. It uses STDOUT.

Output/ConsoleOutputInterface.php

@@ -11,8 +11,6 @@
 
 namespace Symfony\Component\Console\Output;
 
-use Symfony\Component\Console\Output\OutputInterface;
-
 /**
  * ConsoleOutputInterface is the interface implemented by ConsoleOutput class.
  * This adds information about stderr output stream.

Shell.php

@@ -11,7 +11,6 @@
 
 namespace Symfony\Component\Console;
 
-use Symfony\Component\Console\Application;
 use Symfony\Component\Console\Input\StringInput;
 use Symfony\Component\Console\Output\ConsoleOutput;
 use Symfony\Component\Process\ProcessBuilder;