Makefile: Fix Guix-generated debian bundles (deb-packs).

* Makefile (SUPPORTED_GNU_ARCHS): Remove i686; qtbase 6 doesn't build
for it.
(output): Delete the store output after copying the archive, to avoid
accumulating too much cruft under /gnu/store.
* guix/guix-pack-manifest.scm: Adjust comment.  Rename "libring" to
"libjami".  Delete libringclient related variables.  Rename jami-qt to
jami.
(jami-with-certs): Express more concisely via G-Expressions and
search-input-file or search-input-directory.

Change-Id: I37f1482ed79599536fb42818ef32f4861a32c1da
2 files changed