Merge branch '2.8'

* 2.8: (42 commits)
  [DoctrineBridge] Bypass the db when no valid identifier is provided in ORMQueryBuilderLoader
  [Serializer] Fixed typo in comment
  [Form] Fixed: Filter non-integers when selecting entities by int ID
  [Form] [EventListener] fixed sending non array data on submit to ResizeListener
  Fix merge
  Fix merge
  Add test for HHVM FatalErrors
  [2.6][Debug] Fix fatal-errors handling on HHVM
  [Debug] Fix log level of stacked errors
  [Form] Deprecated "cascade_validation"
  [Form] Add "prototype_data" option to collection type
  [VarDumper] Fix uninitialized id in HtmlDumper
  [Form] Added the 'range' FormType
  Fixed fluent interface
  [Console] Fix tests on Windows
  [2.7] Fix unsilenced deprecation notices
  [2.3][Debug] Fix fatal-errors handling on HHVM
  [Debug] fix debug class loader case test on windows
  Standardize the name of the exception variables
  [Debug+VarDumper] Fix handling of PHP7 exception/error model
  ...

Conflicts:
	CHANGELOG-2.7.md
	UPGRADE-2.7.md
	UPGRADE-2.8.md
	src/Symfony/Bridge/Twig/AppVariable.php
	src/Symfony/Component/Console/Helper/DialogHelper.php
	src/Symfony/Component/Debug/ErrorHandler.php
	src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
	src/Symfony/Component/DependencyInjection/Compiler/ResolveParameterPlaceHoldersPass.php
	src/Symfony/Component/Form/AbstractType.php
	src/Symfony/Component/Form/AbstractTypeExtension.php
	src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ContainerAwareHttpKernelTest.php
	src/Symfony/Component/HttpKernel/Tests/Logger.php
	src/Symfony/Component/PropertyAccess/Exception/UnexpectedTypeException.php
	src/Symfony/Component/Routing/Route.php

ProcessUtils.php

@@ -49,7 +49,7 @@ public static function escapeArgument($argument)
 
             $escapedArgument = '';
             $quote = false;
-            foreach (preg_split('/(")/i', $argument, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE) as $part) {
+            foreach (preg_split('/(")/', $argument, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE) as $part) {
                 if ('"' === $part) {
                     $escapedArgument .= '\\"';
                 } elseif (self::isSurroundedBy($part, '%')) {

Tests/PipeStdinInStdoutStdErrStreamSelect.php

@@ -32,7 +32,7 @@
         }
         $out = (binary) substr($out, $written);
     }
-    if (null === $read && strlen($out) < 1) {
+    if (null === $read && '' === $out) {
         $write = array_diff($write, array(STDOUT));
     }
 
@@ -43,7 +43,7 @@
         }
         $err = (binary) substr($err, $written);
     }
-    if (null === $read && strlen($err) < 1) {
+    if (null === $read && '' === $err) {
         $write = array_diff($write, array(STDERR));
     }