Merge branch '2.3' into 2.6

* 2.3:
  replaced the last remaining is_integer() call
  [2.3] [Config] [Console] [DependencyInjection] [DomCrawler] [Form] [HttpKernel] [PropertyAccess] [Security] [Translation] [Yaml] static code analysis, code cleanup
  [Validator] Added missing galician (gl) translations
  [travis] Tests Security sub-components
  [travis] Tests Security sub-components
  CS fixes
  [travis] test with php nightly

Conflicts:
	src/Symfony/Component/Security/Http/Tests/Firewall/RememberMeListenerTest.php

Author: fabpot

Definition/Builder/ArrayNodeDefinition.php

@@ -472,7 +472,7 @@ protected function validatePrototypeNode(PrototypedArrayNode $node)
                 );
             }
 
-            if (null !== $this->key && (null === $this->addDefaultChildren || is_integer($this->addDefaultChildren) && $this->addDefaultChildren > 0)) {
+            if (null !== $this->key && (null === $this->addDefaultChildren || is_int($this->addDefaultChildren) && $this->addDefaultChildren > 0)) {
                 throw new InvalidDefinitionException(
                     sprintf('->addDefaultChildrenIfNoneSet() should set default children names as ->useAttributeAsKey() is used at path "%s"', $path)
                 );

Definition/PrototypedArrayNode.php

@@ -117,7 +117,7 @@ public function setAddChildrenIfNoneSet($children = array('defaults'))
         if (null === $children) {
             $this->defaultChildren = array('defaults');
         } else {
-            $this->defaultChildren = is_integer($children) && $children > 0 ? range(1, $children) : (array) $children;
+            $this->defaultChildren = is_int($children) && $children > 0 ? range(1, $children) : (array) $children;
         }
     }
 

Util/XmlUtils.php

@@ -222,7 +222,7 @@ protected static function getXmlErrors($internalErrors)
                 LIBXML_ERR_WARNING == $error->level ? 'WARNING' : 'ERROR',
                 $error->code,
                 trim($error->message),
-                $error->file ? $error->file : 'n/a',
+                $error->file ?: 'n/a',
                 $error->line,
                 $error->column
             );