(svn r60) -Fix: signal_density is given as a parameter to autosignal. This means all players can define it for themselves.
-Fix a few warnings
// stdafx.cpp : source file that includes just the standard includes
// ttd.pch will be the pre-compiled header
// stdafx.obj will contain the pre-compiled type information
#include "stdafx.h"
// TODO: reference any additional headers you need in STDAFX.H
// and not in this file