[epiphany] configure.ac: use SILENT_AM_RULES from automake 1.11 if possible.

[Xan Lopez <xan src gnome org>]

commit 37a81fb77cb914901e1baba0cd33cda66dd2b9dc
Author: Xan Lopez <xan gnome org>
Date:   Sat Jul 11 23:11:53 2009 +0300

    configure.ac: use SILENT_AM_RULES from automake 1.11 if possible.

 configure.ac |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 6e3d0a0..c8c3e2b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -53,6 +53,9 @@ AC_SUBST([BUILDID])
 
 AM_INIT_AUTOMAKE([1.9 foreign dist-bzip2 no-dist-gzip tar-ustar])
 
+# Use AM_SILENT_RULES if present
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
+
 if test -z "$enable_maintainer_mode"; then
   enable_maintainer_mode=yes
 fi