Merge branch '2.7' into 2.8

* 2.7:
  property constraints can be added in child classes
  added test for staticClassLoader in LazyLoadingMetadatafactory
  spelling fixes
  make sure that null can be the invalid value
  bumped Symfony version to 2.7.25
  updated VERSION for 2.7.24
  update CONTRIBUTORS for 2.7.24
  updated CHANGELOG for 2.7.24
  [FrameworkBundle] Simplify createPackageDefinition
  fix directory resource considers same timestamp not fresh
  return false early from directory resource

Author: nicolas-grekas

CHANGELOG-2.7.md

@@ -7,6 +7,22 @@ in 2.7 minor versions.
 To get the diff for a specific change, go to https://github.com/symfony/symfony/commit/XXX where XXX is the change hash
 To get the diff between two versions, go to https://github.com/symfony/symfony/compare/v2.7.0...v2.7.1
 
+* 2.7.24 (2017-02-06)
+
+ * bug #21063 [Form] Fixed DateType format option for single text widget (HeahDude)
+ * bug #21430 Casting TableCell value to string. (jaydiablo)
+ * bug #21359 [FrameworkBundle] fixed custom domain for translations in php templates (robinlehrmann)
+ * bug #21485 [Process] Non ASCII characters disappearing during the escapeshellarg (GuillaumeVerdon)
+ * bug #21462 [BrowserKit] ignore invalid cookies expires date format (xabbuh)
+ * bug #21438 [Console] Fix TableCell issues with decoration (ogizanagi)
+ * bug #21431 [DoctrineBridge] always check for all fields to be mapped (xabbuh)
+ * bug #21360 [PropertyAccess] Handle interfaces in the invalid argument exception (fancyweb)
+ * bug #21401 [Debug] Workaround "null" $context (nicolas-grekas)
+ * bug #21333 [HttpKernel] Fix ArgumentValueResolver for arguments default null (chalasr)
+ * bug #20871 [HttpKernel] Give higher priority to adding request formats (akeeman)
+ * bug #21285 [TwigBundle] do not lose already set method calls (xabbuh)
+ * bug #21279 #20411 fix Yaml parsing for very long quoted strings (RichardBradley)
+
 * 2.7.23 (2017-01-12)
 
  * bug #21218 [Form] DateTimeToLocalizedStringTransformer does not use timezone when using date only (magnetik)