[vinagre] Enable RDP support during distcheck

[David King <davidk src gnome org>]

commit 2e707f8165563e281ceb9d69af75a9ffbaeb58a0
Author: David King <amigadave amigadave com>
Date:   Mon Jul 21 12:35:04 2014 +0100

    Enable RDP support during distcheck

 Makefile.am |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 7e518de..eebb8ce 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3,7 +3,8 @@ SUBDIRS = help po
 
 DISTCHECK_CONFIGURE_FLAGS = \
        --enable-appdata-validate \
-       --enable-compile-warnings=maximum
+       --enable-compile-warnings=maximum \
+       --enable-rdp
 
 vinagre_vinagre_CPPFLAGS = \
        -I$(top_builddir) \