* doc/guix.texi (Version Numbers): Add example for VCS version numbers.

* gnu/packages/xfce.scm (xfce4-xkb-plugin): New variable.
  (xfce)[propagated-inputs]: Add it.

* gnu/packages/freedesktop.scm (telepathy-logger)[arguments]: Disable parallel
tests.

* gnu/packages/ldc.scm (rdmd): New variable.

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

* gnu/packages/freedesktop.scm (modem-manager)[source]: Use HTTPS URL.

* gnu/packages/mpd.scm (mpd): Update t0 0.19.12.

* gnu/packages/mpd.scm (ncmpcpp): Update to 0.7.3.
[inputs]: Add icu4c.

* gnu/packages/mpd.scm (ncmpcpp)[arguments]: Use 'modify-phases'.

Fixes <http://bugs.gnu.org/22633>.

* gnu/build/vm.scm (load-in-linux-vm): Only pass "-enable-kvm" flag to qemu
  if "/dev/kvm" is present.
* gnu/system/vm.scm (common-kvm-options): Same as above.

* gnu/packages/pkg-config.scm (%pkg-config)[source]: Add non-HTTPS URL.

* guix/grafts.scm (graft-derivation): Name 'name' a keyword parameter.
* guix/packages.scm (package-derivation, package-cross-derivation):
Adjust accordingly.
* tests/grafts.scm ("graft-derivation"): Likewise.
* tests/packages.scm ("package-derivation, indirect grafts"): Likewise.

* guix/derivations.scm (<graft>, graft-derivation, %graft?)
(set-grafting): Move to...
* guix/grafts.scm: ... here.  New file.
* guix/gexp.scm, guix/packages.scm, tests/packages.scm,
guix/scripts/build.scm: Use it.
* Makefile.am (MODULES): Add it.
(SCM_TESTS): Add tests/grafts.scm.
* tests/derivations.scm ("graft-derivation"): Move to...
* tests/grafts.scm: ... here.  New file.

* gnu/packages/qt.scm (python2-pyqt-4): Delete variable. It depends on Qt 4,
  which does not receive security updates any more.

* gnu/packages/kde.scm (qjson): Move from here...
* gnu/packages/qt.scm (qjson): ...to here.
* gnu/packages/pumpio.scm: Drop inclusion of (gnu packages kde).
* gnu/packages/kde.scm: Delete file.
* gnu-system.am (GNU_SYSTEM_MODULES): Unregister it.
* gnu/packages/rdf.scm (soprano): Delete variable.

KDE 4 relies on Qt 4, which does not receive security updates any more.

* gnu/packages/statistics.scm (python-patsy)[properties]: New field.
(python2-patsy): Use 'strip-python2-variant'.

* gnu/packages/statistics.scm (python-patsy, python2-patsy): Update to 0.4.1.

Fixes <http://bugs.gnu.org/22607>.
Reported by myglc2 <myglc2@gmail.com>.

Remove possibilities to install/delete packages to/from a system profile
both for "Package List" and "Package Info" buffers.

* emacs/guix-profiles.el (guix-system-profile-regexp): New variable.
(guix-system-profile?): New procedure.
* emacs/guix-ui-package.el (guix-package-info-insert-output): Do not
display "Install"/"Delete" button for a system profile.
(guix-package-assert-non-system-profile): New procedure.
(guix-package-execute-actions): Use it.

* emacs/guix-buffer.el (guix-buffer-set): Set 'guix-buffer-item' early,
  so that it can be used during displaying entries.  For example, this
  allows us to use a value of the current guix profile when package
  entries are inserted in a "List" or "Info" buffer.

* emacs/guix-ui-package.el (guix-installed-user-packages)
(guix-installed-system-packages): New commands.
* doc/emacs.texi (Emacs Commands): Document them.

* gnu/packages/patches/qemu-CVE-2015-8619.patch,
  gnu/packages/patches/qemu-CVE-2016-1981.patch,
  gnu/packages/patches/qemu-CVE-2016-2197.patch,
  gnu/packages/patches/qemu-usb-ehci-oob-read.patch: New files.
* gnu-system.am (dist_patch_DATA): Add them.
* gnu/packages/qemu.scm (qemu)[source]: Add patches.

* gnu/packages/gnome.scm (gnome-screenshot): New variable.

* gnu/packages/fontutils.scm (libotf): Use mirror://savannah URL.

* gnu/packages/adns.scm (c-ares): Update to 1.11.0.

* gnu/packages/parallel.scm (parallel): Update to 20160122.

* gnu/packages/tls.scm (acme)[arguments]: Add 'docs' phase.
[native-inputs]: Add python-sphinx, python-sphinxcontrib-programoutput,
python-sphinx-rtd-theme, python-setuptools, texinfo.

* gnu/packages/tls.scm (letsencrypt)[arguments]: Add 'docs' phase.
[native-inputs]: Add python2-sphinx, python2-sphinx-rtd-theme,
python2-sphinx-repoze-autointerface,
python2-sphinxcontrib-programoutput, texinfo.

* gnu/packages/python.scm (python-sphinx-repoze-autointerface,
python2-sphinx-repoze-autointerface): New variables.

* guix/licenses.scm (repoze): New variable.

* gnu/packages/python.scm (python-sphinxcontrib-programoutput,
python2-sphinxcontrib-programoutput): New variables.

Unzip was never used for this package.

* gnu/packages/python.scm (python-apipkg): Remove unzip dependency.

* gnu/packages/python.scm (python-editor, python2-editor): New variables.

* gnu/packages/python.scm (python-translitcodec, python2-translitcodec):
  New variables.

* gnu/packages/python.scm (python-celery, python2-celery): New variables.

* gnu/packages/python.scm (python-billiard, python2-billiard):
  New variables.

* gnu/packages/python.scm (python-kombu, python2-kombu): New variables.

* gnu/packages/python.scm (python-amqp, python2-amqp): New variables.

* gnu/packages/python.scm (python-anyjson, python2-anyjson): New variables.

* gnu/packages/python.scm (python-webtest, python2-webtest):
  New variables.

* gnu/packages/python.scm (python-pyquery, python2-pyquery): New variables.

* gnu/packages/python.scm (python-pastedeploy, python2-pastedeploy):
  New variables.