build: Update PO files as per 'make dist'.

Update NEWS.

ui: Improve formatting of package dependencies in recutils.

* guix/ui.scm (package->recutils)[dependencies->recutils]: New
  procedure. Use it.

build: Fix typo in 'guix package --show' test.

* tests/guix-package.sh: Change "^Package:" to "^name:".

build: Better reject systems where the shebang would be too long.

* tests/gexp.scm (shebang): Add "#!".

services: Use system groups where applicable.

* gnu/services/avahi.scm (avahi-service): Add 'system?' field to
  'user-group' form.
* gnu/services/base.scm (guix-service): Likewise.
* gnu/services/dbus.scm (dbus-service): Likewise.
* gnu/services/networking.scm (tor-service): Likewise.

system: Add the 'system?' field for user groups.

Suggested by Mark H. Weaver.

* gnu/system/shadow.scm (<user-group>)[system?]: New field.
  (%base-groups): Introduce 'system-group' macro, and use it.
* gnu/system.scm (user-group->gexp): Pass the 'system?' field.
* guix/build/activation.scm (add-group): Add #:system? and honor it.
  (activate-users+groups): Handle the 'system?' field.
* gnu/system/file-systems.scm (%tty-gid): Choose an ID below 1000.
* doc/guix.texi (User Accounts): Document the 'system?' field.

doc: Make sure out-of-source-tree builds find os-config.tmpl.

* Makefile.am (BUILT_SOURCES): New variable.
* daemon.am (BUILT_SOURCES): Use +=.
* doc.am (BUILT_SOURCES, MAINTAINERCLEANFILES, EXTRA_DIST): Add
  doc/os-config.texi.
  (doc/os-config.texi): New target.
* doc/guix.texi (System Installation): Include os-config.texi.

doc: Add "guix system" to 'dir'.

* doc/guix.texi: Add "guix system" to the dir entry.

services: xorg: Honor ~/.xsession.

* gnu/services/xorg.scm (xinitrc): Attempt to execute ~/.xsession.

install: Add a configuration template to the image.

* gnu/system/os-config.tmpl: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it
* gnu/system/install.scm (configuration-template-service): New
  procedure.
  (installation-services): Call it.
* doc/guix.texi (System Installation): Mention
  configuration-template.scm, and @include gnu/system/os-config.tmpl.

monads: Add 'interned-file'.

* guix/monads.scm (interned-file): New procedure.
* tests/monads.scm ("interned-file"): New test.
* doc/guix.texi (The Store Monad): Document it.

doc: Recommend partition labels.

* doc/guix.texi (System Installation): Recommend partition labels.

services: xorg: Remove /var/run/slim.lock when starting.

Reported by Mark H. Weaver.

* gnu/services/xorg.scm (slim-service)[start]: Remove /var/run/slim.lock
  before starting 'slim'.

gnu: gcc: Update to 4.9.1.

* gnu/packages/gcc.scm (gcc-4.9): Update to 4.9.1.

gnu: Add libftdi.

* gnu/packages/libftdi.scm: New file
* gnu-system.am (GNU_SYSTEM_MODULES): Add libftdi.scm

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

gnu: Adjust more packages to GLib "bin" split.

* gnu/packages/gimp.scm (gegl): Add glib:bin to 'native-inputs'.
* gnu/packages/mail.scm (mu): Ditto.

gnu: parallel: Upgrade to 20140722.

* gnu/packages/parallel.scm (parallel): Upgrade to 20140722.

gnu: xorriso: Upgrade to 3.1.8.

* gnu/packages/cdrom.scm (xorriso): Upgrade to 3.1.8.

gnu: nano: Upgrade to 2.3.6.

* gnu/packages/nano.scm (nano): Upgrade to 2.3.6.