branch master updated (fdb8554 -> ed71cda)

[Ricardo Wurmus]

rekado pushed a change to branch master
in repository guix.

      from  fdb8554   gnu: gajim: Update to 1.0.3.
       new  e580597   gnu: Add squashfs-tools-next.
       new  3ec07ce   gnu: Add singularity.
       new  5ffac53   pack: Rename "tar" to "archiver".
       new  b2817f0   pack: Add support for squashfs images.
       new  ed71cda   doc: Add concept index entry for Docker and guix pack.

The 5 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "adds" were already present in the repository and have only
been added to this reference.


Summary of changes:
 doc/guix.texi                |  22 +++++++++
 gnu/packages/compression.scm |  19 +++++++-
 gnu/packages/linux.scm       |  49 ++++++++++++++++++-
 guix/scripts/pack.scm        | 109 ++++++++++++++++++++++++++++++++++++++-----
 4 files changed, 186 insertions(+), 13 deletions(-)