[vinagre] Use AM_SILENT_RULES if available.

[Jonh Wendell <jwendell src gnome org>]

commit 0662bb0446f0cf4342304a7a95b1547938297171
Author: Jonh Wendell <jwendell gnome org>
Date:   Mon Oct 26 09:16:26 2009 -0300

    Use AM_SILENT_RULES if available.

 configure.ac |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index bcc97ab..2fd5dd9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,6 +9,9 @@ AM_INIT_AUTOMAKE(AC_PACKAGE_NAME, AC_PACKAGE_VERSION)
 AM_CONFIG_HEADER(config.h)
 AM_MAINTAINER_MODE
 
+# Use the silent-rules feature when possible.
+m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
+
 dnl make sure we keep ACLOCAL_FLAGS around for maintainer builds to work
 AC_SUBST(ACLOCAL_AMFLAGS, "\${ACLOCAL_FLAGS}")