Let autoloader resolve paths under apps lib directory.

lib/base.php

@@ -97,8 +97,14 @@ class OC {
 			$path = 'public/' . strtolower(str_replace('\\', '/', substr($className, 3)) . '.php');
 		} elseif (strpos($className, 'OCA\\') === 0) {
 			foreach (self::$APPSROOTS as $appDir) {
-				$path = $appDir['path'] . '/' . strtolower(str_replace('\\', '/', substr($className, 3)) . '.php');
-				$fullPath = stream_resolve_include_path($path);
+				$path = strtolower(str_replace('\\', '/', substr($className, 4)) . '.php');
+				$fullPath = stream_resolve_include_path($appDir['path'] . '/' . $path);
+				if (file_exists($fullPath)) {
+					require_once $fullPath;
+					return false;
+				}
+				$libpath = substr($path, 0, strpos($path, '/')) . '/lib' . substr($path, strpos($path, '/'));
+				$fullPath = stream_resolve_include_path($appDir['path'] . '/' . $libpath);
 				if (file_exists($fullPath)) {
 					require_once $fullPath;
 					return false;