[gnome-keyring] Add silent-rules automake option when running automake 1.11

[Stefan Walter <stefw src gnome org>]

commit 639d8e67269dc13b0ab5b029376b1a9fcf9d3e31
Author: Stef Walter <stef memberwebs com>
Date:   Sun Aug 30 00:17:09 2009 +0000

    Add silent-rules automake option when running automake 1.11
    
    Can now supress most automake output. This makes it easier to
    see warnings and the like. Use the following to build quietly:
    
    make -s V=0

 configure.in |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/configure.in b/configure.in
index b2fe612..d2ecec4 100644
--- a/configure.in
+++ b/configure.in
@@ -2,7 +2,8 @@ AC_INIT(library/gnome-keyring.h)
 
 AM_INIT_AUTOMAKE(gnome-keyring, 2.27.91)
 AM_CONFIG_HEADER(config.h)
-	
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([no])])
+
 dnl ****************************************************************************
 dnl Library libtool versioning