Merge branch '2.3' into 2.4

* 2.3:
  typo fixed in AbstractProcessTest (getoutput() => getOutput())
  Avoid question mark and asterisk in folder names to prevent windows filesystem issues.
  [Translation] [Config] Clear libxml errors after parsing XML file

Conflicts:
	src/Symfony/Component/Config/Util/XmlUtils.php

Tests/FinderTest.php

@@ -575,11 +575,11 @@ public function testIteratorKeys(Adapter\AdapterInterface $adapter)
     public function testRegexSpecialCharsLocationWithPathRestrictionContainingStartFlag(Adapter\AdapterInterface $adapter)
     {
         $finder = $this->buildFinder($adapter);
-        $finder->in(__DIR__.DIRECTORY_SEPARATOR.'Fixtures'.DIRECTORY_SEPARATOR.'r+e.g?e*x[c]a(r)s')
+        $finder->in(__DIR__.DIRECTORY_SEPARATOR.'Fixtures'.DIRECTORY_SEPARATOR.'r+e.gex[c]a(r)s')
             ->path('/^dir/');
 
-        $expected = array('r+e.g?e*x[c]a(r)s'.DIRECTORY_SEPARATOR.'dir',
-                          'r+e.g?e*x[c]a(r)s'.DIRECTORY_SEPARATOR.'dir'.DIRECTORY_SEPARATOR.'bar.dat',);
+        $expected = array('r+e.gex[c]a(r)s'.DIRECTORY_SEPARATOR.'dir',
+                          'r+e.gex[c]a(r)s'.DIRECTORY_SEPARATOR.'dir'.DIRECTORY_SEPARATOR.'bar.dat',);
         $this->assertIterator($this->toAbsoluteFixtures($expected), $finder);
     }