Fix namespace deprecation warnings

lib/SimpleSAML/Auth/ProcessingChain.php

@@ -153,7 +153,7 @@ class ProcessingChain
 
         $className = \SimpleSAML\Module::resolveClass(
             $config['class'],
-            'Auth_Process',
+            'Auth\Process',
             '\SimpleSAML\Auth\ProcessingFilter'
         );
         $config['%priority'] = $priority;

lib/SimpleSAML/Auth/Source.php

@@ -306,7 +306,7 @@ abstract class Source
             // Check whether or not there's a factory responsible for instantiating our Auth Source instance
             $factoryClass = \SimpleSAML\Module::resolveClass(
                 $id,
-                'Auth_Source_Factory',
+                'Auth\Source\Factory',
                 '\SimpleSAML\Auth\SourceFactory'
             );
 
@@ -315,7 +315,7 @@ abstract class Source
             $authSource = $factory->create($info, $config);
         } catch (\Exception $e) {
             // If not, instantiate the Auth Source here
-            $className = \SimpleSAML\Module::resolveClass($id, 'Auth_Source', '\SimpleSAML\Auth\Source');
+            $className = \SimpleSAML\Module::resolveClass($id, 'Auth\Source', '\SimpleSAML\Auth\Source');
             $authSource = new $className($info, $config);
         }
 

lib/SimpleSAML/Stats.php

@@ -38,7 +38,7 @@ class Stats
     private static function createOutput(\SimpleSAML\Configuration $config)
     {
         $cls = $config->getString('class');
-        $cls = \SimpleSAML\Module::resolveClass($cls, 'Stats_Output', '\SimpleSAML\Stats\Output');
+        $cls = \SimpleSAML\Module::resolveClass($cls, 'Stats\Output', '\SimpleSAML\Stats\Output');
 
         $output = new $cls($config);
         return $output;