Move all of midiplay into its subdir and add a Makefile for it, add header files as necessary.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14841 a1c6a512-1295-4272-9138-f99709370657
diff --git a/apps/plugins/midi/guspat.h b/apps/plugins/midi/guspat.h
index e35f54b..3f858cd 100644
--- a/apps/plugins/midi/guspat.h
+++ b/apps/plugins/midi/guspat.h
@@ -5,6 +5,7 @@
  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
  *                     \/            \/     \/    \/            \/
+ * $Id$
  *
  * Copyright (C) 2005 Stepan Moskovchenko
  *