gnu: imlib2: Update to 1.4.8.

gnu/packages/image.scm (imlib2): Update to 1.4.8.

Merge branch 'gnome-updates'

gnu: webkitgtk-2.4: Update to 2.4.11.

* gnu/packages/webkit.scm (webkitgtk-2.4): Update to 2.4.11.

gnu: webkitgtk: Update to 2.12.1.

* gnu/packages/webkit.scm (webkitgtk): Update to 2.12.1.

gnu: linux-libre-4.1: Update to 4.1.22.

* gnu/packages/linux.scm (linux-libre-4.1): Update to 4.1.22.

gnu: linux-libre-4.4: Update to 4.4.8.

* gnu/packages/linux.scm (linux-libre-4.4): Update to 4.4.8.

gnu: linux-libre: Update to 4.5.2.

* gnu/packages/linux.scm (linux-libre): Update to 4.5.2.

build: Move 'Makefile' fragments to subdirectories.

This follows a convention used by some other GNU packages like Autoconf,
Bison, Coreutils, and Gnulib.

* doc.am: Rename to ...
* doc/local.mk: ... this.
* emacs.am: Rename to ...
* emacs/local.mk: ... this.
* gnu-system.am: Rename to ...
* gnu/local.mk: ... this.
* daemon.am: Rename to ...
* nix/local.mk: ... this.
* Makefile.am: Adapt to them.
* doc/guix.texi (Porting to a New Platform): Adapt documentation.
* guix/config.scm.in (%state-directory, %config-directory): Adapt comments.
* emacs/guix-config.el.in (guix-config-state-directory): Likewise.

gnu: Add acpi.

* gnu/packages/linux.scm (acpi): New variable.

substitute: Sanitize the client-provided column number.

* guix/scripts/substitute.scm (client-terminal-columns): Sanitize the
client's column number.

substitute: Install the client's locale.

* guix/store.scm (set-build-options): Add #:locale parameter and honor
it.
* guix/scripts/substitute.scm (guix-substitute): Install the client's
locale.

substitute: Internationalize signature and download messages.

* guix/scripts/substitute.scm (assert-valid-narinfo): Use gettext for
messages.

substitute: Better abbreviate substitute URL in progress report.

Suggested by Danny Milosavljevic <dannym@scratchpost.org>.

* guix/build/download.scm (nar-uri-abbreviation): New procedure.
* guix/scripts/substitute.scm (process-substitution): Use it instead of
'store-path-abbreviation'.

download: 'uri-abbreviation' can abbreviate the URI's basename.

* guix/build/download.scm (uri-abbreviation): Use 'ellipsis' instead of
"...".  Abbreviate the basename of PATH if needed.

doc: Add "X.509 Certificates" section under "Application Setup".

Reported by Roel Janssen <roel@gnu.org>.

* doc/guix.texi (Application Setup)[X.509 Certificates]: New section.
(X.509 Certificates): Add an example of certificates in the profile.

gnu: python-mox3: Update to 0.14.0.

* gnu/packages/openstack.scm (python-mox3): Update to 0.14.0.
[inputs]: Move python-fixtures, python-pbr, python-setuptools,
python-six, python-testtools ...
[native-inputs]: ... to here.

gnu: python-stevedore: Update to 1.12.0.

* gnu/packages/openstack.scm (python-stevedore): Update to 1.12.0.
[inputs]: Move python-setuptools, python-docutils, python-mock,
python-oslotest, python-sphinx ...
[native-inputs]: ... to here.

gnu: armadillo: Update to 6.700.4.

* gnu/packages/maths.scm (armadillo): Update to 6.700.4.

download: Add "%COMPAT" to the priority string.

Fixes <http://bugs.gnu.org/23311>.

* guix/build/download.scm (tls-wrap): Add 'set-session-priorities!' call.

gnu: git: Update to 2.7.4 [fixes CVE-2016-2315 and CVE-2016-2324].

* gnu/packages/version-control.scm (git): Update to 2.7.4.
(git-manpages)[source]: Update hash.