[gnome-boxes] Bump spice-gtk dependency

[Fabiano Fidêncio <ffidencio src gnome org>]

commit cd8252f573db0c326a18ddc291270f95f6eeb80a
Author: Fabiano Fidêncio <fidencio redhat com>
Date:   Thu Nov 20 00:32:51 2014 +0100

    Bump spice-gtk dependency
    
    Boxes is going to use an API to access underlying libusb device that was
    introduced in 0.27 release.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=698430

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 1bb3b68..caf3de8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -58,7 +58,7 @@ LIBVIRT_GLIB_MIN_VERSION=0.1.9
 LIBVIRT_GCONFIG_MIN_VERSION=0.2.0
 LIBXML2_MIN_VERSION=2.7.8
 LIBUSB_MIN_VERSION=1.0.9
-SPICE_GTK_MIN_VERSION=0.15
+SPICE_GTK_MIN_VERSION=0.27
 GUDEV_MIN_VERSION=165
 OSINFO_MIN_VERSION=0.2.11
 TRACKER_SPARQL=0.13.1