make catching at game end optional

for debugging purposes these are annoying since the OS usualy gives a better error message (stacktrace etc) on "crash" than on a catched exception + return.

src/game.cpp

@@ -786,9 +786,11 @@ int main(int argc, char** argv)
 	} catch(const char * e) {
 		std::cerr << "Caught a string thrown as an exception: " << e << std::endl;
 		return 1;
+#if !defined(NO_CATCH_AT_GAME_END)
 	} catch(...) { //Added this to ensure that even when we terminate with `throw 42`, the exception is caught and all destructors are actually called.
 		std::cerr << "Caught unspecified general exception. Terminating." << std::endl; //Apparently, some compilers will simply terminate without
 		return 1;									//calling destructors if there is no one to catch it at all.
+#endif
 	}
 
 	return 0;