services: Add '%facebook-host-aliases'.

* gnu/services/networking.scm (%facebook-host-aliases): New variable.
* doc/guix.texi (Networking Services): Document it.

services: Add 'bitlbee-service'.

* gnu/services/networking.scm (bitlbee-service): New procedure.
* doc/guix.texi (Networking Services): Document it.

gnu: xorg: Remove xf86-input-vmmouse.

* gnu/packages/xorg.scm (xf86-input-vmmouse): Remove.  This driver
  implement the mouse protocol of a proprietary emulator.
* gnu/services/xorg.scm (xorg-start-command): Remove reference.

system: Fix value of 'EUDEV_RULES_DIRECTORY'.

* gnu/services/base.scm (udev-service): Append "/lib/udev/rules.d" to
  EUDEV_RULES_DIRECTORY.

system: Add udev rule for /dev/kvm.

* gnu/services/base.scm (kvm-udev-rule): New procedure.
  (udev-service): Use it, and add it to RULES.
  (guix-build-accounts): Add "kvm" to the 'supplementary-groups' field.
* gnu/system/shadow.scm (%base-groups): Add "kvm".

system: Add support for swap devices.

* gnu/services/base.scm (swap-service): New procedure.
* gnu/system.scm (<operating-system>)[swap-devices]: New field.
  (swap-services): New procedure.
  (essential-services): Use it.

system: Define 'device-mapping-kind', and add a 'close' procedure.

* gnu/system/file-systems.scm (<mapped-device-type>): New record type.
  (<mapped-device>)[command]: Remove field.
  [type]: New field.
* gnu/services/base.scm (device-mapping-service): Rename 'command'
  parameter to 'open'.  Add 'close' parameter and honor it.
* gnu/system.scm (luks-device-mapping): Rename to...
  (open-luks-device): ... this.
  (close-luks-device): New procedure.
  (luks-device-mapping): New variable.
  (device-mapping-services): Get the type of MD, and pass its 'open' and
  'close' fields to 'device-mapping-service'.

services: dhcp-client: Start 'dhclient' in "no wait" mode.

* gnu/services/networking.scm (dhcp-client-service): Pass '-nw' to
  'dhclient'.

services: file-system: Change directory to root before unmounting.

* gnu/services/base.scm (file-system-service)[stop]: Add 'chdir' call.

services: user-processes: Wait for complete process termination.

* gnu/services/base.scm (user-processes-service): Add 'wait' loop.

services: udev: Make non-respawnable.

* gnu/services/base.scm (udev-service): Add 'respawn?' field.

services: Add 'dhcp-client-service'.

* gnu/services/networking.scm (dhcp-client-service): New procedure.
* doc/guix.texi (Networking Services): Document it.

services: static-networking-service: Wait for udev, except for loopback.

Reported by DusXMT on #guix.

* gnu/services/networking.scm (static-networking-service): Add
  'requirement' field.  Change 'documentation' to be a string literal.

Merge branch 'master' into core-updates

Conflicts:
	gnu-system.am

system: Use eudev instead of udev by default.

* gnu/system.scm (%base-packages): Change 'udev' to 'eudev'.
* gnu/services/base.scm (udev-service): Change #:udev to default to
  'eudev'.

services: udev: Allow the use of eudev.

* gnu/services/base.scm (udev-service): Adjust 'start' method to support
  eudev in addition to udev.

system: Add FUSE and ALSA udev rules by default.

* gnu/services/base.scm (%base-services): Pass FUSE and ALSA-UTILS to
  'udev-service'.

Merge branch 'master' into core-updates

Conflicts:
	gnu/packages/image.scm

system: Add support for Linux-style mapped devices.

* gnu/system/file-systems.scm (<mapped-device>): New record type.
* gnu/system.scm (<operating-system>)[mapped-devices]: New field.
  (luks-device-mapping): New procedure.
  (other-file-system-services)[device-mappings, requirements]: New
  procedures.  Pass #:requirements to 'file-system-service'.
  (device-mapping-services): New procedure.
  (essential-services): Use it.  Append its result to the return value.
  (operating-system-initrd-file): Add comment.
* gnu/services/base.scm (file-system-service): Add #:requirements
  parameter and honor it.
  (device-mapping-service): New procedure.
* gnu/system/linux-initrd.scm (base-initrd): Add comment.

services: udev: Allow for additional udev rules.

* gnu/services/base.scm (udev-rules-union): New procedure.
  (udev-service): Add #:rules parameter.  Call 'udev-rules-union' and
  create udev.conf.  Set $UDEV_CONFIG_FILE before spawning udevd.