Merge branch '3.4'

* 3.4:
  [3.4] Remove useless docblocks
  [3.3] More docblock fixes
  [2.7] More docblock fixes
  [TwigBridge] Fix BC break due required twig environment
  Random fixes
  Docblock fixes
  [DI] Fix cannot bind env var
  Fix some signatures in PHP-DSLs
  [HttpKernel] Enhance deprecation message
  bumped Symfony version to 3.4.0
  updated VERSION for 3.4.0-BETA3
  updated CHANGELOG for 3.4.0-BETA3
  [SecurityBundle] Fix the datacollector to properly support decision.object being null

Author: nicolas-grekas

Tests/FilesystemTest.php

@@ -1089,9 +1089,6 @@ public function testMakePathRelative($endPath, $startPath, $expectedPath)
         $this->assertEquals($expectedPath, $path);
     }
 
-    /**
-     * @return array
-     */
     public function providePathsForMakePathRelative()
     {
         $paths = array(
@@ -1334,9 +1331,6 @@ public function testIsAbsolutePath($path, $expectedResult)
         $this->assertEquals($expectedResult, $result);
     }
 
-    /**
-     * @return array
-     */
     public function providePathsForIsAbsolutePath()
     {
         return array(