use REGISTER_WITH_LUA_FUNCTION instead of a separate registration mechanism

stepmania/src/LuaManager.h

@@ -199,7 +199,8 @@ struct LuaFunctionList
 int LuaFunc_##func( lua_State *L ) { \
 	LuaHelpers::Push( L, expr ); return 1; \
 } \
-static LuaFunctionList g_##func( #func, LuaFunc_##func ); /* register it */
+void LuaFunc_Register_##func( lua_State *L ) { lua_register( L, #func, LuaFunc_##func ); } \
+REGISTER_WITH_LUA_FUNCTION( LuaFunc_Register_##func );
 
 #endif