[gnome-builder] flatpak: add define for min gnome version

[Christian Hergert <chergert src gnome org>]

commit 219583736f32fc034ca93bea998b3fb5963deb69
Author: Christian Hergert <chergert redhat com>
Date:   Mon Mar 13 23:08:20 2017 -0700

    flatpak: add define for min gnome version
    
    We only want to show recent gnome versions by default, so make this a
    define so we can easily change it.

 plugins/flatpak/gbp-flatpak-preferences-addin.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/plugins/flatpak/gbp-flatpak-preferences-addin.c b/plugins/flatpak/gbp-flatpak-preferences-addin.c
index b0808d1..dd74053 100644
--- a/plugins/flatpak/gbp-flatpak-preferences-addin.c
+++ b/plugins/flatpak/gbp-flatpak-preferences-addin.c
@@ -17,6 +17,7 @@
  */
 
 #define G_LOG_DOMAIN "gbp-flatpak-preferences-addin"
+#define MIN_GNOME_VERSION "3.22"
 
 #include <flatpak.h>
 #include <glib/gi18n.h>
@@ -133,10 +134,7 @@ is_old_gnome_version (const gchar *version)
   if (g_str_equal (version, "master"))
     return FALSE;
 
-  if (g_utf8_collate ("3.20", version) > 0)
-    return TRUE;
-
-  return FALSE;
+  return g_utf8_collate (MIN_GNOME_VERSION, version) > 0;
 }
 
 static void