Merge branch '4.4' into 5.4

* 4.4:
  Fix global state pollution between tests run with ApplicationTester
  µcs fix
  [Intl] Fix the IntlDateFormatter::formatObject signature

Tests/Dumper/PhpDumperTest.php

@@ -832,7 +832,7 @@ public function testLazyArgumentProvideGenerator()
             switch (++$i) {
                 case 0:
                     $this->assertEquals('k1', $k);
-                    $this->assertInstanceOf(\stdCLass::class, $v);
+                    $this->assertInstanceOf(\stdClass::class, $v);
                     break;
                 case 1:
                     $this->assertEquals('k2', $k);