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.

bootloader: Emit warnings with 'warning'.

* gnu/bootloader.scm (bootloader-configuration-target): Use 'warning'
instead of 'issue-deprecation-warning'.

gnu: xf86-video-freedreno: Add missing input.

* gnu/packages/xorg.scm (xf86-video-freedreno)[inputs]: Add zlib.

gnu: libzip: Fix CVE-2017-12858.

* gnu/packages/patches/libzip-CVE-2017-12858.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/compression.scm (libzip)[source]: Use it.

gnu: srt2vtt: Update source URL.

* gnu/packages/video.scm (srt2vtt)[source]: Fetch sources from new URL.

gnu: Give descriptive file-names for some Git sources.

* gnu/packages/java.scm (classpath-devel)[source]: Set the file-name.
* gnu/packages/guile.scm (guile-for-guile-emacs,
guile-syntax-highlight)[source]: Likewise.

gnu: Fetch several Git sources over HTTPS.

* gnu/packages/admin.scm (interrobang)[source]: Use HTTPS URL.
* gnu/packages/audio.scm (ardour)[source]: Likewise.
* gnu/packages/embedded.scm (libjaylink, openocd)[source]: Likewise.
* gnu/packages/gnome.scm (byzanz)[source]: Likewise.
* gnu/packages/gnunet.scm (guile-gnunet)[source]Likewise.
* gnu/packages/java.scm (classpath)[source]: Likewise.
* gnu/packages/microcom.scm (microcom)[source]: Likewise.
* gnu/packages/python.scm (python-axolotl-curve25519)[source]: Likewise.
* gnu/packages/rdesktop.scm (freerdp)[source]: Likewise.
* gnu/packages/shells.scm (rc)[source]: Likewise.
* gnu/packages/web.scm (libwebsockets)[source]: Use new source URL.

gnu: youtube-dl: Update to 2017.08.27.1.

* gnu/packages/video.scm (youtube-dl): Update to 2017.08.27.1.

gnu: iodine: Fix path to ifconfig.

* gnu/packages/networking.scm (iodine)[arguments]: Fix path to ifconfig.

gnu: filezilla: Update to 3.27.1.

* gnu/packages/ftp.scm (filezilla): Update to 3.27.1.

gnu: libfilezilla: Update to 0.10.1.

* gnu/packages/ftp.scm (libfilezilla): Update to 0.10.1.
[native-inputs]: Add pkg-config.

gnu: wxwidgets: Update to 3.0.3.

* gnu/packages/wxwidgets.scm (wxwidgets): Update to 3.0.3.
[source]: Remove 'wxwidgets-fix-windowGTK.patch'.
* gnu/packages/patches/wxwidgets-fix-windowGTK.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Remove it.

gnu: gnome: Install some GStreamer plugins.

* gnu/packages/gnome.scm (gnome): Add gst-plugins-base and gst-plugins-good.
This will allow stock GNOME installs to play Ogg Vorbis files, among other
things.  It will also ensure that GST_PLUGIN_SYSTEM_PATH is set to a sensible
value when GNOME is installed to the system instead of the user profile.

gnu: totem: Wrap environment for thumbnailer.

* gnu/packages/gnome.scm (totem): Wrap thumbnailer also in environment that
  sets GST_PLUGIN_SYSTEM_PATH.

gnu: nano: Update to 2.8.7.

* gnu/packages/nano.scm (nano): Update to 2.8.7.