Merge branch '4.0'

* 4.0: (42 commits)
  fix merge
  Remove some unused variables and properties
  [appveyor] disable memory limit on composer up
  [HttpFoundation] don't prefix cookies with "Set-Cookie:"
  Remove some unused variables and properties
  [HttpFoundation] Fixed default user-agent (3.X -> 4.X)
  Fix debug:form definition
  Remove some unused variables, properties and methods
  fix some edge cases with indented blocks
  [ExpressionLanguage] Fix parse error on 5.3
  [HttpKernel] remove noisy frame in controller stack traces
  [DI] Force root-namespace for function calls in the dumper container
  [DI] Fix circular-aliases message
  register system cache clearer only if it's used
  doc : Namespace prefix must end with a "\"
  [ExpressionLanguage] throw an SyntaxError instead of letting a undefined index notice
  Prevent a loop in aliases within the `findDefinition` method
  [HttpKernel] Disable inlining on PHP 5
  Ensure that inlined services with parameterized class name can be dumped
  [DI] Fix non-string class handling in PhpDumper
  ...

DependencyInjection/FormPass.php

@@ -18,7 +18,6 @@
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
 use Symfony\Component\DependencyInjection\Reference;
-use Symfony\Component\Form\Command\DebugCommand;
 
 /**
  * Adds all services with the tags "form.type", "form.type_extension" and
@@ -36,7 +35,7 @@ class FormPass implements CompilerPassInterface
     private $formTypeGuesserTag;
     private $formDebugCommandService;
 
-    public function __construct(string $formExtensionService = 'form.extension', string $formTypeTag = 'form.type', string $formTypeExtensionTag = 'form.type_extension', string $formTypeGuesserTag = 'form.type_guesser', string $formDebugCommandService = DebugCommand::class)
+    public function __construct(string $formExtensionService = 'form.extension', string $formTypeTag = 'form.type', string $formTypeExtensionTag = 'form.type_extension', string $formTypeGuesserTag = 'form.type_guesser', string $formDebugCommandService = 'console.command.form_debug')
     {
         $this->formExtensionService = $formExtensionService;
         $this->formTypeTag = $formTypeTag;

Extension/Core/DataTransformer/DateIntervalToStringTransformer.php

@@ -23,20 +23,17 @@
 class DateIntervalToStringTransformer implements DataTransformerInterface
 {
     private $format;
-    private $parseSigned;
 
     /**
      * Transforms a \DateInterval instance to a string.
      *
      * @see \DateInterval::format() for supported formats
      *
-     * @param string $format      The date format
-     * @param bool   $parseSigned Whether to parse as a signed interval
+     * @param string $format The date format
      */
-    public function __construct(string $format = 'P%yY%mM%dDT%hH%iM%sS', bool $parseSigned = false)
+    public function __construct(string $format = 'P%yY%mM%dDT%hH%iM%sS')
     {
         $this->format = $format;
-        $this->parseSigned = $parseSigned;
     }
 
     /**

Tests/DependencyInjection/FormPassTest.php

@@ -14,7 +14,6 @@
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
 use Symfony\Component\DependencyInjection\Argument\ServiceClosureArgument;
-use Symfony\Component\Form\Command\DebugCommand;
 use Symfony\Component\Form\DependencyInjection\FormPass;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Definition;
@@ -43,7 +42,7 @@ public function testDoNothingIfDebugCommandNotLoaded()
 
         $container->compile();
 
-        $this->assertFalse($container->hasDefinition(DebugCommand::class));
+        $this->assertFalse($container->hasDefinition('console.command.form_debug'));
     }
 
     public function testAddTaggedTypes()
@@ -72,13 +71,13 @@ public function testAddTaggedTypesToDebugCommand()
         $container = $this->createContainerBuilder();
 
         $container->setDefinition('form.extension', $this->createExtensionDefinition());
-        $container->setDefinition(DebugCommand::class, $this->createDebugCommandDefinition());
+        $container->setDefinition('console.command.form_debug', $this->createDebugCommandDefinition());
         $container->register('my.type1', __CLASS__.'_Type1')->addTag('form.type')->setPublic(true);
         $container->register('my.type2', __CLASS__.'_Type2')->addTag('form.type')->setPublic(true);
 
         $container->compile();
 
-        $cmdDefinition = $container->getDefinition(DebugCommand::class);
+        $cmdDefinition = $container->getDefinition('console.command.form_debug');
 
         $this->assertEquals(
             array(