[gtk/gtk-3-22] Bump up the dependency of libepoxy

[Emmanuele Bassi <ebassi src gnome org>]

commit ba883b55ee200e6b0ee041e4d014f880f946512a
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Apr 11 16:31:55 2018 +0100

    Bump up the dependency of libepoxy
    
    We're going to use API introduced in libepoxy 1.4 to check for GLX
    availability.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=775279

 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/configure.ac b/configure.ac
index fef0ecebf3..023a86fb17 100644
--- a/configure.ac
+++ b/configure.ac
@@ -63,7 +63,7 @@ m4_define([wayland_required_version], [1.9.91])
 m4_define([wayland_protocols_required_version], [1.12])
 m4_define([mirclient_required_version], [0.22.0])
 m4_define([mircookie_required_version], [0.17.0])
-m4_define([epoxy_required_version], [1.0])
+m4_define([epoxy_required_version], [1.4])
 m4_define([cloudproviders_required_version], [0.2.5])
 GLIB_REQUIRED_VERSION=glib_required_version
 PANGO_REQUIRED_VERSION=pango_required_version