[gnome-packagekit] Enable nice build output on automake1.11

[Richard Hughes <rhughes src gnome org>]

commit 76d82b88d494f2ce64093cc0f4b5a4154616a854
Author: Richard Hughes <richard hughsie com>
Date:   Thu Jun 4 10:49:18 2009 +0100

    Enable nice build output on automake1.11
---
 configure.ac |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/configure.ac b/configure.ac
index 23d31c5..1f41a38 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6,6 +6,9 @@ AM_INIT_AUTOMAKE(AC_PACKAGE_NAME, AC_PACKAGE_VERSION)
 AM_CONFIG_HEADER(config.h)
 AC_CONFIG_MACRO_DIR([m4])
 
+# enable nice build output on automake1.11
+m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
+
 AC_PROG_CC
 AC_PROG_INSTALL
 AM_PROG_LIBTOOL