Problem: name conflicts from windows.h, draft API declared in pch.

src/tcp_connecter.cpp

@@ -35,7 +35,6 @@
 #include "tcp_connecter.hpp"
 #include "stream_engine.hpp"
 #include "io_thread.hpp"
-#include "platform.hpp"
 #include "random.hpp"
 #include "err.hpp"
 #include "ip.hpp"
@@ -44,9 +43,7 @@
 #include "tcp_address.hpp"
 #include "session_base.hpp"
 
-#if defined ZMQ_HAVE_WINDOWS
-#include "windows.hpp"
-#else
+#if !defined ZMQ_HAVE_WINDOWS
 #include <unistd.h>
 #include <sys/types.h>
 #include <sys/socket.h>