[gnio] Add AM_MAINTAINER_MODE to squash warning

[Ryan Lortie <ryanl src gnome org>]

commit 0525068877ec413641bee9eaf97cfd13986fa1f2
Author: Ryan Lortie <desrt desrt ca>
Date:   Sun Apr 26 01:16:47 2009 -0400

    Add AM_MAINTAINER_MODE to squash warning
---
 configure.ac |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/configure.ac b/configure.ac
index f86a3df..aaa134d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,6 @@
 AC_INIT(gnio, alpha)
 AM_INIT_AUTOMAKE
+AM_MAINTAINER_MODE
 
 AC_PROG_LIBTOOL
 AC_PROG_CC