Implement ticket #83: socket TOS abstraction

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@920 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjlib/include/pj/compat/os_auto.h.in b/pjlib/include/pj/compat/os_auto.h.in
index 5148138..b129237 100644
--- a/pjlib/include/pj/compat/os_auto.h.in
+++ b/pjlib/include/pj/compat/os_auto.h.in
@@ -50,6 +50,7 @@
 #undef PJ_HAS_MALLOC_H
 #undef PJ_HAS_NETDB_H
 #undef PJ_HAS_NETINET_IN_H
+#undef PJ_HAS_NETINET_IP_H
 #undef PJ_HAS_SETJMP_H
 #undef PJ_HAS_STDARG_H
 #undef PJ_HAS_STDDEF_H