include the right gssapi.h
some time ago gssapi.h moved to gssapi/gssapi.h, and on some systems
(e.g. FreeBSD) gssapi.h carries a deprecation #warning - which becomes
a fatal error since we're compiling with -Werror
--- a/loudmouth/lm-sasl.c Mon Jan 11 20:31:29 2016 +0100
+++ b/loudmouth/lm-sasl.c Mon Jan 11 20:32:21 2016 +0100
@@ -25,7 +25,7 @@
#include <glib.h>
#ifdef HAVE_GSSAPI
-#include <gssapi.h>
+#include <gssapi/gssapi.h>
#endif
#include "lm-sock.h"