[vinagre] Enable AM_MAINTAINER_MODE in configure.ac

[David King <davidk src gnome org>]

commit 387fc2eeb550ee0ee53022213171ab843000a50a
Author: David King <amigadave amigadave com>
Date:   Thu Sep 8 20:35:05 2011 +0200

    Enable AM_MAINTAINER_MODE in configure.ac
    
    As pointed out by Ryan Lortie, and with thanks to FrÃdÃric PÃters:
    
    http://blogs.gnome.org/desrt/2011/09/08/am_maintainer_mode-is-not-cool/

 configure.ac |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 7f5807c..de7cc49 100644
--- a/configure.ac
+++ b/configure.ac
@@ -13,6 +13,7 @@ AC_PROG_CC
 AM_PROG_CC_C_O
 AM_PROG_VALAC([0.12.0])
 
+AM_MAINTAINER_MODE([enable])
 GNOME_COMPILE_WARNINGS([maximum])
 GNOME_MAINTAINER_MODE_DEFINES