[library-web] keep on publishing gnome-panel API

[Frederic Peters <fpeters src gnome org>]

commit 9017848c98e86265324e8021d023085d0c929e13
Author: Frédéric Péters <fpeters 0d be>
Date:   Sat Sep 12 10:47:30 2015 +0200

    keep on publishing gnome-panel API

 data/extra-tarballs |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/data/extra-tarballs b/data/extra-tarballs
index a0bc08b..2529cad 100644
--- a/data/extra-tarballs
+++ b/data/extra-tarballs
@@ -102,3 +102,6 @@ gnome://gnumeric?min=1.12
 gnome://clutter-gtk?min=1.4
 
 http://www.freedesktop.org/software/geoclue/releases/2.1/geoclue-2.1.1.tar.xz
+
+# legacy APIs, but new releases are happening
+gnome://gnome-panel?min=3.8