[gnome-boxes] Revert "Don't check for gtk-vnc-2.0 vapi"

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 7fa701f79ca114012565fbe9e16b2bd3c878aa3f
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Wed Oct 26 23:53:03 2011 +0300

    Revert "Don't check for gtk-vnc-2.0 vapi"
    
    This reverts commit 11ba7808fe86675adc9e1062cfffb35a5fc2cd42.

 configure.ac |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 6f6c626..b46c9db 100644
--- a/configure.ac
+++ b/configure.ac
@@ -60,6 +60,7 @@ VALA_CHECK_PACKAGES([
   gdk-pixbuf-2.0
   glib-2.0
   gtk+-3.0
+  gtk-vnc-2.0
   libvirt-gobject-1.0
   libxml-2.0
   posix