Merge branch '2.8' into 3.0

* 2.8:
  [VarDumper] Fix tests on PHP 7
  [DomCrawler] Clarify the value returned by getPhpFiles()
  [DependencyInjection] Fix #16461 Let Container::set() replace existing aliases
  avoid (string) catchable fatal error for instances of __PHP_Incomplete_Class
  remove unnecessary retrieval and setting of data
  Update validators.fr.xlf
  avoid (string) catchable fatal error for __PHP_Incomplete_Class instances
  sendContent return as parent.
  [DomCrawler] Remove the overridden getHash() method to prevent problems when cloning the crawler
  [FrameworkBundle] Fix a typo
  Added more exceptions to singularify method
  Add width attribute on SVG
  [FrameworkBundle] Support autowiring for TranslationInterface
  [WebProfiler] Fixed styles for search block and menu profiler for IE Edge

Conflicts:
	src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php
	src/Symfony/Component/DomCrawler/Crawler.php

Author: nicolas-grekas

DataCollector/Util/ValueExporter.php

@@ -35,6 +35,10 @@ public function exportValue($value, $depth = 1, $deep = false)
             return sprintf('Object(%s)', get_class($value));
         }
 
+        if ($value instanceof \__PHP_Incomplete_Class) {
+            return sprintf('__PHP_Incomplete_Class(%s)', $this->getClassNameFromIncomplete($value));
+        }
+
         if (is_array($value)) {
             if (empty($value)) {
                 return '[]';
@@ -75,4 +79,11 @@ public function exportValue($value, $depth = 1, $deep = false)
 
         return (string) $value;
     }
+
+    private function getClassNameFromIncomplete(\__PHP_Incomplete_Class $value)
+    {
+        $array = new \ArrayObject($value);
+
+        return $array['__PHP_Incomplete_Class_Name'];
+    }
 }

Tests/DataCollector/Util/ValueExporterTest.php

@@ -36,4 +36,12 @@ public function testDateTimeImmutable()
         $dateTime = new \DateTimeImmutable('2014-06-10 07:35:40', new \DateTimeZone('UTC'));
         $this->assertSame('Object(DateTimeImmutable) - 2014-06-10T07:35:40+0000', $this->valueExporter->exportValue($dateTime));
     }
+
+    public function testIncompleteClass()
+    {
+        $foo = new \__PHP_Incomplete_Class();
+        $array = new \ArrayObject($foo);
+        $array['__PHP_Incomplete_Class_Name'] = 'AppBundle/Foo';
+        $this->assertSame('__PHP_Incomplete_Class(AppBundle/Foo)', $this->valueExporter->exportValue($foo));
+    }
 }