[libsoup/wip/tpopela/negotiate] Include the config.h in the soup-auth.h otherwise Negotiate symbols won't be defined

[Tomas Popela <tpopela src gnome org>]

commit d9b373b0dd60055a6140cd0d5d05d446533b7a8d
Author: Tomas Popela <tpopela redhat com>
Date:   Tue Jan 19 11:58:24 2016 +0100

    Include the config.h in the soup-auth.h otherwise Negotiate symbols won't be defined

 libsoup/soup-auth.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/libsoup/soup-auth.h b/libsoup/soup-auth.h
index e471587..19a0edf 100644
--- a/libsoup/soup-auth.h
+++ b/libsoup/soup-auth.h
@@ -6,6 +6,8 @@
 #ifndef SOUP_AUTH_H
 #define SOUP_AUTH_H 1
 
+#include <config.h>
+
 #include <libsoup/soup-types.h>
 #include <libsoup/soup-headers.h>