Fix `Autoloader` and `Version` classes.

The `Solarium_Autoloader` class is now `Solarium\Autoloader`. The
`Solarium_Version` class does no longer exist and
`Solarium\Client::VERSION` must be used instead.

phar/stub.php

@@ -35,18 +35,18 @@
 
 Phar::mapPhar("solarium.phar");
 require_once 'phar://solarium.phar/Autoloader.php';
-Solarium_Autoloader::register();
+Solarium\Autoloader::register();
 
 if ('cli' === php_sapi_name() && basename(__FILE__) === basename($_SERVER['argv'][0]) && isset($_SERVER['argv'][1])) {
 
     switch ($_SERVER['argv'][1]) {
 
         case 'version':
-            echo "Solarium version " . Solarium_Version::VERSION ."\n";
+            echo 'Solarium version ' . Solarium\Client::VERSION . "\n";
             break;
 
         default:
-            echo "Unknown command '" . $_SERVER['argv'][1] . "' (Supported commands: version)\n";
+            echo 'Unknown command \'' . $_SERVER['argv'][1] . '\' (Supported commands: version)' . "\n";
     }
 
     exit(0);