minor fixes:

- vcmi can play music files from archives
- converted resource_reward fields in bank_config into json object, fixes 3000 gems reward in shipwreck
- some compile fixes for minizip

lib/minizip/ioapi.h

@@ -21,6 +21,14 @@
 #ifndef _ZLIBIOAPI64_H
 #define _ZLIBIOAPI64_H
 
+#ifndef OF /* function prototypes */
+#  ifdef STDC
+#    define OF(args)  args
+#  else
+#    define OF(args)  ()
+#  endif
+#endif
+
 #if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__))
 
   // Linux needs this to support file operation on files larger then 4+GB