[hitori] Add silent-rules support

[Philip Withnall <pwithnall src gnome org>]

commit 8ed9292bf92bfd7b9260c9481a97b3c1f9c67d6a
Author: Philip Withnall <philip tecnocode co uk>
Date:   Sun Oct 17 20:09:30 2010 +0100

    Add silent-rules support

 configure.ac |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index c794bb3..e2f062a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -8,6 +8,8 @@ AC_PROG_CC
 AC_PROG_CPP
 LT_INIT
 
+m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
+
 dnl ***************************************************************************
 dnl Options
 dnl ***************************************************************************