Merge branch '2.8' into 3.2

* 2.8:
  Fixing missing abstract attribute in XmlDumper
  [Form] Remove DateTimeToStringTransformer $parseUsingPipe option
  Fix file perms
  Fixed filename in help text for update-data.php

Author: fabpot

Dumper/XmlDumper.php

@@ -200,6 +200,10 @@ private function addService($definition, $id, \DOMElement $parent)
             $service->appendChild($autowiringType);
         }
 
+        if ($definition->isAbstract()) {
+            $service->setAttribute('abstract', 'true');
+        }
+
         if ($callable = $definition->getConfigurator()) {
             $configurator = $this->document->createElement('configurator');
 

Tests/Dumper/XmlDumperTest.php

@@ -171,4 +171,12 @@ public function testDumpAutowireData()
 
         $this->assertEquals(file_get_contents(self::$fixturesPath.'/xml/services24.xml'), $dumper->dump());
     }
+
+    public function testDumpAbstractServices()
+    {
+        $container = include self::$fixturesPath.'/containers/container_abstract.php';
+        $dumper = new XmlDumper($container);
+
+        $this->assertEquals(file_get_contents(self::$fixturesPath.'/xml/services_abstract.xml'), $dumper->dump());
+    }
 }

Tests/Fixtures/containers/container_abstract.php

@@ -0,0 +1,12 @@
+<?php
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+$container = new ContainerBuilder();
+
+$container
+    ->register('foo', 'Foo')
+    ->setAbstract(true)
+;
+
+return $container;

Tests/Fixtures/xml/services_abstract.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<container xmlns="http://symfony.com/schema/dic/services" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
+  <services>
+    <service id="foo" class="Foo" abstract="true"/>
+  </services>
+</container>