[anjuta-extras] configure: Use AM_SILENT_RULES when available

[Johannes Schmid <jhs src gnome org>]

commit 4ae3d3a1c2ef187079609d7e741a8bb9add6a28a
Author: Johannes Schmid <jhs gnome org>
Date:   Sun Feb 12 13:47:31 2012 +0100

    configure: Use AM_SILENT_RULES when available

 configure.ac |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index aa283c0..dad80b8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,7 +15,8 @@ AC_SUBST(ANJUTA_EXTRAS_VERSION)
 
 AM_INIT_AUTOMAKE(AC_PACKAGE_NAME, AC_PACKAGE_VERSION)
 AC_CONFIG_HEADERS([config.h])
-AM_MAINTAINER_MODE
+
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
 AC_ISC_POSIX
 AC_PROG_CC