[libgee] Use silent rules for users of automake 1.11

[Didier Villevalois <dvillevalois src gnome org>]

commit e34c0428a05e48ca786611a1156558b8d12e38ba
Author: Didier 'Ptitjes <ptitjes free fr>
Date:   Fri Sep 25 22:03:42 2009 +0200

    Use silent rules for users of automake 1.11

 configure.ac |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 965f2b7..6fd6ac7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,6 +2,7 @@ AC_INIT([libgee], [0.3.1], [ptitjes free fr], [libgee])
 AC_CONFIG_SRCDIR([Makefile.am])
 AC_CONFIG_HEADERS(config.h)
 AM_INIT_AUTOMAKE([dist-bzip2])
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
 # Checks for programs.
 AC_PROG_CC