Merge branch '6.0' into 6.1

* 6.0:
  [Console] Fixes "Incorrectly nested style tag found" error when using multi-line header content
  Fix LDAP connection options
  fix probably undefined variable $expireAt
  Fix aliases handling in command name completion
  Fix division by zero
  Allow ErrorHandler ^5.0 to be used in HttpKernel
  [Security/Http] Ignore invalid URLs found in failure/success paths
  Fix typo

Author: nicolas-grekas

Tests/Fragment/InlineFragmentRendererTest.php

@@ -155,7 +155,7 @@ public function testExceptionInSubRequestsDoesNotMangleOutputBuffers()
         $this->assertEquals('Foo', ob_get_clean());
     }
 
-    public function testLocaleAndFormatAreIsKeptInSubrequest()
+    public function testLocaleAndFormatAreKeptInSubrequest()
     {
         $expectedSubRequest = Request::create('/');
         $expectedSubRequest->attributes->set('_format', 'foo');