Slowly apply part of #2065: py3k can be compiled with VS8.0
diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index 907cc7b..3f94ebc 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -5001,8 +5001,12 @@
PyModule_AddIntConstant(m, "RCVALL_OFF", RCVALL_OFF);
PyModule_AddIntConstant(m, "RCVALL_ON", RCVALL_ON);
PyModule_AddIntConstant(m, "RCVALL_SOCKETLEVELONLY", RCVALL_SOCKETLEVELONLY);
+#ifdef RCVALL_IPLEVEL
PyModule_AddIntConstant(m, "RCVALL_IPLEVEL", RCVALL_IPLEVEL);
+#endif
+#ifdef RCVALL_MAX
PyModule_AddIntConstant(m, "RCVALL_MAX", RCVALL_MAX);
+#endif
#endif /* _MSTCPIP_ */
/* Initialize gethostbyname lock */