Merge branch '4.4' into 5.2

* 4.4:
  fix readlink description

Author: javiereguiluz

components/filesystem.rst

@@ -214,13 +214,9 @@ support symbolic links, a third boolean argument is available::
 
 :method:`Symfony\\Component\\Filesystem\\Filesystem::readlink` read links targets.
 
-PHP's :phpfunction:`readlink` function returns the target of a symbolic link. However, its behavior
-is completely different under Windows and Unix. On Windows systems, ``readlink()``
-resolves recursively the children links of a link until a final target is found. On
-Unix-based systems ``readlink()`` only resolves the next link.
-
-The :method:`Symfony\\Component\\Filesystem\\Filesystem::readlink` method provided
-by the Filesystem component always behaves in the same way::
+The :method:`Symfony\\Component\\Filesystem\\Filesystem::readlink` method
+provided by the Filesystem component behaves in the same way on all operating
+systems (unlike PHP's :phpfunction:`readlink` function)::
 
     // returns the next direct target of the link without considering the existence of the target
     $filesystem->readlink('/path/to/link');