logLevelInvalid for bad function calls and invalid data formats.

include/lua_core.h

@@ -1,5 +1,8 @@
 #pragma once
 
+void defineGlobals();
+void logCustom( int logLevel, const char *text, va_list args );
+
 bool luaInit();
 int luaTraceback( lua_State *L );
 bool luaCallMain();