Update __byond_version_compat.dm

Author: JohnFulpWillard

code/__byond_version_compat.dm

@@ -9,6 +9,14 @@
 #error You need version 515.1630 or higher
 #endif
 
+//If you update these values, update the message in the #error
+#define MAX_BYOND_MAJOR 516
+#define MAX_BYOND_MINOR 1658
+#if ((DM_VERSION > MAX_BYOND_MAJOR) || (DM_BUILD > MAX_BYOND_MINOR)) && !defined(SPACEMAN_DMM)
+#error Your version of BYOND is too new to compile this project.
+#error Download version 515.1647 at www.byond.com/download/build/515/515.1642_byond.exe
+#endif
+
 // 515 split call for external libraries into call_ext
 #if DM_VERSION < 515
 #define LIBCALL call