added xrick game

original xrick code by 'BigOrno' at:
http://www.bigorno.net/xrick/

Rockbox port, plus bugfixes at:
https://github.com/pierluigi-vicinanza/xrick

Further changes:

 * Additonal fixes from g#3026
 * Port to modern plugin API
 * Add Pluginlib keymap fallback
 * Support all >1bpp screens
 * Fix build warnings in miniz
 * Better error message when resources are missing

Change-Id: Id83928bc2539901b0221692f65cbca41389c58e7

apps/plugins/xrick/system/main_rockbox.c

@@ -0,0 +1,43 @@
+ /***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Port of xrick, a Rick Dangerous clone, to Rockbox.
+ * See http://www.bigorno.net/xrick/
+ *
+ * Copyright (C) 2008-2014 Pierluigi Vicinanza
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "xrick/system/system.h"
+#include "xrick/game.h"
+
+#include "plugin.h"
+
+/* Plug-in entry point */
+enum plugin_status plugin_start(const void* parameter)
+{
+    char *filename = (char*)parameter;
+    bool success = sys_init(1, &filename);
+    if (success)
+    {
+        game_run();
+    }
+    sys_shutdown();
+    return (success? PLUGIN_OK : PLUGIN_ERROR);
+}
+
+/* eof */