Expose stoppedclock to Lua

src/lua_script.c

@@ -102,6 +102,9 @@ int LUA_PushGlobals(lua_State *L, const char *word)
 	} else if (fastcmp(word,"circuitmap")) {
 		lua_pushboolean(L, circuitmap);
 		return 1;
+	} else if (fastcmp(word,"stoppedclock")) {
+		lua_pushboolean(L, stoppedclock);
+		return 1;
 	} else if (fastcmp(word,"netgame")) {
 		lua_pushboolean(L, netgame);
 		return 1;