gnu: linux-libre-4.4: Update to 4.4.15.

* gnu/packages/linux.scm (linux-libre-4.4): Update to 4.4.15.

gnu: Add gptfdisk.

* gnu/packages/disk.scm (gptfdisk): New variable.

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

gnu: emacs-flycheck: Add missing dependency on emacs-seq.

Fixes a regression introduced in
afb6fdaa5de2607261015372f31b1c19fd503a61.

* gnu/packages/emacs.scm (flycheck)[propagated-inputs]: Add EMACS-SEQ.

gnu: Remove unneeded 'imported-modules' fields for 'origin'.

* gnu/packages/engineering.scm (fastcap)[source](modules,
imported-modules): Remove.
* gnu/packages/wm.scm (awesome)[source](imported-modules): Remove.
* tests/packages.scm ("package-source-derivation, snippet"): Remove
'imported-modules' field.

services: <shepherd-service> no longer has an 'imported-modules' field.

* gnu/services/shepherd.scm (<shepherd-service>)[imported-modules]:
Remove.
(%default-imported-modules): Make private.
(shepherd-service-file): Use 'with-imported-modules'.
(shepherd-configuration-file): Remove 'modules' and the calls to
'imported-modules' and 'compiled-modules'.  Use
'with-imported-modules' instead.
* doc/guix.texi (Shepherd Services): Adjust accordingly.
* gnu/services/base.scm (file-system-shepherd-service): Use
'with-imported-modules'.  Remove 'imported-modules' field.
* gnu/system/mapped-devices.scm (device-mapping-service-type): Remove
'imported-modules'.
(open-luks-device): Use 'with-imported-modules'.
* gnu/tests.scm (marionette-shepherd-service): Remove 'imported-modules'
field and use 'with-imported-modules'.

gnu: Use 'gexp->file' in conjunction with 'with-imported-modules'.

* gnu/services.scm (activation-script): Remove code to set '%load-path'
and use 'with-imported-modules' instead.
(cleanup-gexp): Likewise.
* gnu/system/vm.scm (%vm-module-closure): New variable.
(expression->derivation-in-linux-vm): Remove #:modules.
[loader]: Remove code to set '%load-path'.
[builder]: Use %VM-MODULE-CLOSURE.
(qemu-image): Use 'with-imported-modules'.

gexp: 'gexp->file' emits code to set '%load-path'.

* guix/gexp.scm (gexp->file): Add #:set-load-path? parameter and honor it.
* gnu/system.scm (operating-system-parameters-file): Pass
  #:set-load-path? #f.
* doc/guix.texi (G-Expressions): Adjust accordingly.

linux-container: Fix list of imported modules.

This fixes a regression introduced in
958dd3ce68733bcd5c1231424c7e4ad39e67594a.

* gnu/system/linux-container.scm (container-script)[script]: Add (guix
combinators) to the list of imported modules.

gnu: Switch to 'with-imported-modules'.

* gnu/services.scm (directory-union): Use 'with-imported-modules'
instead of the '#:modules' argument of 'computed-file'.
* gnu/services/base.scm (udev-rules-union): Likewise.
* gnu/services/dbus.scm (system-service-directory): Likewise.
* gnu/services/desktop.scm (wrapped-dbus-service):
(polkit-directory): Likewise.
* gnu/services/networking.scm (tor-configuration->torrc): Likewise.
* gnu/services/xorg.scm (xorg-configuration-directory): Likewise.
* gnu/system/install.scm (self-contained-tarball): Likewise.
* gnu/system/linux-container.scm (container-script): Likewise.
* gnu/system/linux-initrd.scm (expression->initrd): Likewise, and
remove #:modules parameter.
(flat-linux-module-directory): Use 'with-imported-modules'.
(base-initrd): Likewise.
* gnu/system/locale.scm (locale-directory): Likewise.
* gnu/system/shadow.scm (default-skeletons): Likewise.
* gnu/system/vm.scm (expression->derivation-in-linux-vm): Likewise.
* gnu/tests/base.scm (run-basic-test): Likewise.
* gnu/tests/install.scm (run-install): Likewise.
* doc/guix.texi (Initial RAM Disk): Update 'expression->initrd'
documentation.

gnu: obs: Remove compiler flags for non-Intel hardware.

* gnu/packages/video.scm (obs)[arguments]: If compiling for arm or mips
devices then don't add Intel specific compiler flags.

gnu: Add Ribotaper.

* gnu/packages/bioinformatics.scm (ribotaper): New variable.

gnu: Add bedtools-2.18.

* gnu/packages/bioinformatics.scm (bedtools-2.18): New variable.

gnu: xscreensaver: Update to 5.35.

* gnu/packages/xdisorg.scm (xscreensaver): Update to 5.35.

gnu: sxhkd: Update to 0.5.6.

* gnu/packages/xdisorg.scm (sxhkd): Update to 0.5.6.

gnu: mtdev: Update to 1.1.5.

* gnu/packages/xdisorg.scm (mtdev): Update to 1.1.5.

gnu: libxkbcommon: Update to 0.6.1.

* gnu/packages/xdisorg.scm (libxkbcommon): Update to 0.6.1.

gnu: arandr: Update to 0.1.9.

* gnu/packages/xdisorg.scm (arandr): Update to 0.1.9.

gnu: mpd: Update to 0.19.17.

* gnu/packages/mpd.scm (mpd): Update to 0.19.17.

gnu: parallel: Update to 20160622.

* gnu/packages/parallel.scm (parallel): Update to 20160622.

gnu: Add Tmux Themepack.

* gnu/packages/tmux.scm (tmux-themepack): New variable.

Signed-off-by: Leo Famulari <leo@famulari.name>