gnu: gnutls: Upgrade to 3.2.15.

* gnu/packages/gnutls.scm (gnutls): Upgrade to 3.2.15.

install: Add more useful packages.

* gnu/system/install.scm (installation-os)[packages]: Add isc-dhcp,
  net-tools, ddrescue, kbd, and texinfo-4.

gnu: linux-libre: Build the e1000e driver (Intel ethernet NIC driver.)

* gnu/packages/linux.scm (linux-libre): Add CONFIG_E1000E=m.

gnu: Merge Parted, fdisk, and ddrescue in (gnu packages disk).

* gnu/packages/parted.scm: Rename to...
* gnu/packages/disk.scm: ... this.  New file.  Merge with...
* gnu/packages/fdisk.scm: ... this; remove file;
* gnu/packages/ddrescue.scm: ... and this; remove file.
* gnu/system/install.scm, gnu/system/vm.scm: Adjust accordingly.
* gnu-system.am (GNU_SYSTEM_MODULES): Remove
  gnu/packages/{parted,fdisk,ddrescue}.scm and add
  gnu/packages/disk.scm.

system: Make sure /run/setuid-programs comes first in $PATH.

* gnu/system.scm (etc-directory) <bashrc>: Move /run/setuid-programs
  first in $PATH.

gnu: elfutils: Add synopsis and description.

* gnu/packages/elf.scm (elfutils): Add synopsis and description.

system: File system sources can be marked as labels or devices.

* gnu/system/file-systems.scm (<file-system>)[title]: New field.
* gnu/services/base.scm (file-system-service): Add #:title parameter.
  In 'start' gexp, use 'canonicalize-device-spec' and honor TITLE.
* gnu/system.scm (other-file-system-services,
  operating-system-root-file-system, operating-system-initrd-file):
  Adjust accordingly.
* gnu/system/linux-initrd.scm (file-system->spec): Likewise.
* gnu/system/vm.scm (system-disk-image): Add 'title' field for the root
  file system.
* guix/build/linux-initrd.scm (mount-file-system): Expect the second
  element of SPEC to be the title.
  (boot-system)[root-mount-point?, root-fs-type]: Likewise.
* gnu/services/dmd.scm (dmd-configuration-file): Select
  'canonicalize-device-spec'.

Revert "gnu: hurd: Add Hurd Minimal."

This reverts commit bc046a94dec2afadbc1ee3957f13098a8d8b393c,
which referred to uncommitted things ('glibc/hurd-headers'.)

gnu: hurd: Add Hurd Minimal.

* gnu/packages/hurd.scm (hurd-minimal): New variable.
* gnu/packages/patches/hurd-minimal.patch: New patch.
* gnu-system.am (dist_patch_DATA): Add it.

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

services: syslogd: Write fewer messages to /dev/console.

* gnu/services/base.scm (syslog-service)[contents]: Remove "kern.*" from
  /dev/console.

gnu: util-linux: Remove dependency on Perl.

* gnu/packages/linux.scm (util-linux)[source](patches): New field.
* gnu/packages/patches/util-linux-perl.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.

Add (gnu system install).

* gnu/system/install.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.

system: Add 'issue' field.

* gnu/system.scm (<operating-system>)[issue]: New field.
  (%default-issue): New variable.
  (etc-directory): Add #:issue parameter and honor it.
  (operating-system-etc-directory): Adjust call accordingly.
* build-aux/hydra/demo-os.scm: Add 'issue' field.

system: Add more options for 'mingetty-service'.

* gnu/services/base.scm (mingetty-service): Add #:auto-login,
  #:login-program, and #:login-pause? parameters and honor them.

gnu: Move libarchive to (gnu packages backup).

* gnu/packages/compression.scm (libarchive): Move to...
* gnu/packages/backup.scm (libarchive): ... here.
  Import (guix licenses) with #:renamer to avoid conflicting 'zlib'
  bindings.

vm: disk-image: Specify the root file system using a label.

* gnu/system/vm.scm (system-disk-image)[root-label]: New variable.
  Use it for the root file system, and pass it as #:file-system-label to
  'qemu-image'.

gnu: Add rdiff-backup.

* gnu/packages/backup.scm (rdiff-backup): New variable.

gnu: Add btar.

* gnu/packages/backup.scm (btar): New variable.

gnu: Add rdup.

* gnu/packages/backup.scm (rdup): New variable.

gnu: Add libarchive.

* gnu/packages/compression.scm (libarchive): New variable.