gnu: python-pytz: Update to 2016.10.

* gnu/packages/python.scm (python-pytz): Update to 2016.10.

gnu: python-pyyaml: Update to 3.12.

* gnu/packages/python.scm (python-pyyaml): Update to 3.12.
[source]: Use pypi-uri.

gnu: python-pygments: Update to 2.1.3.

* gnu/packages/python.scm (python-pygments): Update to 2.1.3.

gnu: tiled: Update to 0.18.0.

* gnu/packages/game-development.scm (tiled): Update to 0.18.0.

hydra: Remove 'qemu-image' job.

As per the discussion at
<https://lists.gnu.org/archive/html/guix-devel/2016-12/msg01098.html>.

* build-aux/hydra/gnu-system.scm (demo-os): Remove.
(qemu-jobs): Remove 'qemu-image' job.
* build-aux/hydra/demo-os.scm: Remove.

gnu: mc: Partially fix absolute file paths.

Partially fixes <http://bugs.gnu.org/25273>.

* gnu/packages/mc.scm (mc)[arguments]: Add new phase 'fix-absolutism.
This substitutes absolute file paths with functional file paths.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: pius: Update to 2.2.2-0.891687c.

* gnu/packages/gnupg.scm (pius): Update to 2.2.2-0.891687c.
[inputs]: Change GNUPG-2.0 to GNUPG (2.1).

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

Add (guix ssh) module.

* guix/scripts/offload.scm (connect-to-remote-daemon)
(store-import-channel, store-export-channel, send-files)
(retrieve-files): Move to (guix ssh).
(nonce): Add optional 'name' parameter and use it.
(retrieve-files*): New procedure.
(transfer-and-offload): Use it instead of 'retrieve-files', and add
first parameter to 'send-files'.
(assert-node-can-import): Likewise.
(assert-node-can-export): Use 'retrieve-files' instead of
'store-export-channel'.
* guix/ssh.scm: New file.
* configure.ac: Use 'GUIX_CHECK_GUILE_SSH' and define 'HAVE_GUILE_SSH'
Automake conditional.
* Makefile.am (MODULES) [HAVE_GUILE_SSH]: Add guix/ssh.scm.

gnu: libtermkey: Update to 0.19.

* gnu/packages/terminals.scm (libtermkey): Update to 0.19.

Co-authored-by: Leo Famulari <leo@famulari.name>

gnu: libpng: Mention CVE-2016-10087.

* gnu/packages/patches/libpng-fix-null-ptr-dereference.patch: Rename to ...
* gnu/packages/patches/libpng-CVE-2016-10087.patch: ... this.
* gnu/local.mk (dist_patch_DATA): Adjust.
* gnu/packages/image.scm (libpng/fixed)[source]: Use renamed patch.

import: crate: Do not build when guile-json is not available.

* Makefile.am (MODULES): Add 'guix/import/crate.scm' and
'guix/scripts/import/crate.scm' only when HAVE_GUILE_JSON.

gnu: linux-libre@4.1: Update to 4.1.37.

* gnu/packages/linux.scm (linux-libre-4.1): Update to 4.1.37.

gnu: multiqc: Update to 0.9.

Suggested by Raoul Bonnal <ilpuccio.febo@gmail.com>.

* gnu/packages/bioinformatics.scm (multiqc): Update to 0.9.
[origin]: Add patch.
* gnu/packages/patches/multiqc-fix-git-subprocess-error.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.

gnu: elogind: Enable ACL support.

* gnu/packages/freedesktop.scm (elogind) [inputs]: Add acl.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

services: Add libmtp's udev rules to '%desktop-services'.

Suggested by Chris Marusich <cmmarusich@gmail.com>.

* gnu/services/desktop.scm (%desktop-services): Add 'mtp' service via
call to 'simple-service'.

gnu: mpd: Install systemd service files.

* gnu/packages/mpd.scm (mpd)[arguments]: Add 'install-service-files' phase.

gnu: r-genomicfeatures: Update to 1.26.2.

* gnu/packages/bioinformatics.scm (r-genomicfeatures): Update to 1.26.2.

gnu: r-biostrings: Update to 2.42.1.

* gnu/packages/bioinformatics.scm (r-biostrings): Update to 2.42.1.

gnu: r-limma: Update to 3.30.7.

* gnu/packages/bioinformatics.scm (r-limma): Update to 3.30.7.

gnu: r-variantannotation: Update to 1.20.2.

* gnu/packages/bioinformatics.scm (r-variantannotation): Update to 1.20.2.