[gnome-build-meta] project.conf: Adding downloads.gnome.org source alias

[Tristan Van Berkom <tvb src gnome org>]

commit aced9034ae9f5737fcc227f5f90a07b43bffbd42
Author: Tristan Van Berkom <tristan vanberkom codethink co uk>
Date:   Tue Feb 13 00:43:47 2018 +0900

    project.conf: Adding downloads.gnome.org source alias
    
    So we can refer to GNOME tarballs using an alias in elements.

 project.conf | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/project.conf b/project.conf
index f234021..a06b10d 100644
--- a/project.conf
+++ b/project.conf
@@ -33,6 +33,7 @@ options:
 # be changed without triggering a rebuild.
 #
 aliases:
+  gnome_downloads: https://download.gnome.org/sources/
   cairo_org: https://cairographics.org/
   downloads.sourceforge.net: http://downloads.sourceforge.net/
   ftp_gnu_org: https://ftp.gnu.org/gnu/