All HTTP gnu.org (and supported subdomain) HOME-PAGEs changed to HTTPS.
From 'guix lint -c gnu-description'. * gnu/packages/gnunet.scm (gnunet): Adjust description. * gnu/packages/marst.scm (marst): Likewise. * gnu/packages/maths.scm (c-graph): Likewise. * gnu/packages/networking.scm (macchanger): Likewise.
* gnu/packages/marst.scm: New file. * gnu-system.am: Add it.