gnu: font-mathjax, js-mathjax: Remove hard-coded version.

* gnu/package-s/javascript.scm (font-mathjax, js-mathjax)[arguments]: Re-use
font-mathjax's ‘version’ field instead of duplicating the version number.

gnu: font-mathjax: Update to 2.7.2.

* gnu/packages/javascript.scm (font-mathjax): Update to 2.7.2.

gnu: tiled: Update to 1.0.3.

* gnu/packages/game-development.scm (tiled): Update to 1.0.3.

gnu: libgcrypt: Fix CVE-2017-0379.

* gnu/packages/gnupg.scm (libgcrypt)[replacement]: New field.
(libgcrypt/fixed): New variable.

gnu: qtox: Update to 1.11.0.

* gnu/packages/messaging.scm (qtox): Update to 1.11.0.

Signed-off-by: Arun Isaac <arunisaac@systemreboot.net>

gnu: Escape @ in the perl-importer package description.

@EXPORT is interpreted as a texinfo command, therefore the @ needs
escaping. This was causing a test failure in the guix-package.sh file.

* gnu/packages/perl.scm (perl-importer)[description]: Escape @.

gnu: emacs-lua-mode: Update to current git.

* gnu/packages/emacs.scm (emacs-lua-mode): Update; fixes a very annoying bug
with syntax highlighting of multi-line strings.

gnu: Add python-pyalsaaudio.

* gnu/packages/audio.scm (python-pyalsaaudio, python2-pyalsaaudio): New
variables.

Signed-off-by: 宋文武 <iyzsong@member.fsf.org>

gnu: font-gnu-unifont: Update to 10.0.06.

* gnu/packages/fonts.scm (font-gnu-unifont): Update to 10.0.06.

gnu: emacs-org: Update to 20170828

* gnu/packages/emacs.scm (emacs-org): Update to 20170828 (a.k.a. 9.0.10).

gnu: gnupg: Clean up arguments.

* gnu/packages/gnupg.scm (gnupg)[arguments]: Shorten the
'patch-test-paths phase.

gnu: gnupg: Update to 2.2.0.

* gnu/packages/gnupg.scm (gnupg): Update to 2.2.0.
[arguments]: Add flag to run more tests.

gnu: r-minimal: Remove timestamp from man page.

* gnu/packages/statistics.scm (r-minimal)[arguments]: Adjust
"build-reproducibly" phase to prevent the bundled help2man script from
printing the current month and year.

gnu: pspp: Update to 1.0.1.

* gnu/packages/statistics.scm (pspp): Update to 1.0.1.

gnu: jemalloc: Update to 5.0.1.

* gnu/packages/jemalloc.scm (jemalloc): Update to 5.0.1.
[inputs]: Add perl.

services: user-processes: Reap child processes.

Fixes <http://bugs.gnu.org/26931>.
Reported by Leo Famulari <leo@famulari.name>.

* gnu/services/base.scm (user-processes-service-type)[stop]: Add
'reap-children' loop.
* gnu/tests/base.scm (run-halt-test): New procedure.
(%test-halt): New variable.

marionette: Augment the set of keystrokes.

* gnu/build/marionette.scm (%qwerty-us-keystrokes): Add ', ", and `.

marionette: Fix typing of capital letters.

Previously we'd use "sendkey P" instead of "sendkey shift-p", which had
no effect.

* gnu/build/marionette.scm (character->keystroke): New procedure.
(string->keystroke-commands): Use it.

marionette: 'wait-for-file' really raises an error when a file is missing.

* gnu/build/marionette.scm (wait-for-file): Arrange to call 'error' on
the host, not in the guest.

gnu: emacs-nix-mode: Move to package-management.scm.

Reported by Christopher Baines.
This fixes a top-level reference among mutually-dependent modules.

* gnu/packages/emacs.scm (emacs-nix-mode): Move to...
* gnu/packages/package-management.scm (emacs-nix-mode): ... here.