[gok] Add support for AM_SILENT_RULES

[Gerd Kohlberger <gerdk src gnome org>]

commit 561f01c13419b02bceff9b358ec25f48dd0a0c04
Author: Gerd Kohlberger <gerdk src gnome org>
Date:   Sun Nov 15 14:59:16 2009 +0100

    Add support for AM_SILENT_RULES
    
    See "GNOME Goal: Nicer Builds" for details.

 configure.in |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/configure.in b/configure.in
index 752d8c0..e7de355 100644
--- a/configure.in
+++ b/configure.in
@@ -26,6 +26,9 @@ AC_SUBST(LT_CURRENT)
 AC_SUBST(LT_REVISION)
 AC_SUBST(LT_AGE)
 
+dnl Use AM_SILENT_RULES if available
+m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
+
 dnl Specify a header configuration file
 AM_CONFIG_HEADER(config.h)