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

Co-authored-by: 宋文武 <iyzsong@gmail.com>

* gnu/packages/python.scm (python-pillow, python2-pillow): Update to 3.1.1.

* gnu/packages/password-utils.scm (assword): New variable.

* gnu/packages/python.scm (python2-xdo): New variable.

* gnu/packages/python.scm (python2-numpy): Take the result of
'package-with-python2' directly.
(python2-scipy): Likewise.
(python-matplotlib)[properties]: New field.
(python2-matplotlib): Call 'strip-python2-variant'.

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

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

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

Fixes <http://bugs.gnu.org/22437>.
Reported by Leo Famulari <leo@famulari.name> and others.

* guix/build-system/python.scm (package-with-explicit-python): Add
  #:variant-property and honor it.
(strip-python2-variant): New procedure.

* gnu/packages/gnome.scm (upower)[native-inputs]: Add LIBXML2, LIBXSLT,
and DOCBOOK-XSL.

* gnu/packages/password-utils.scm (keepassx): Update to 2.0.2.

* gnu/packages/libcanberra.scm (libcanberra/gtk+-2): New variable.

* gnu/packages/python.scm (python2-pysqlite): Update to 2.8.1.
[source]: Change to `pypi uri` syntax.
[home-page]: Update to new homepage.

* gnu/packages/python.scm (python2-backport-ssl-match-hostname):
Update to 3.5.0.1.
[arguments]: Skip tests.
[synopsis]: Update for python version 3.5.x.

* gnu/packages/python.scm (python-cryptography): Update to 1.2.2.
[source]: Change to `pypi uri` syntax.
[native-inputs]: Add python-pyasn1, python-pyasn1-modules,
python-hypothesis.
(python2-cryptography)[propagated-inputs]: Add
python2-backport-ssl-match-hostname

* gnu/packages/python.scm (python-cryptography-vectors): Update to 1.2.2.

* gnu/packages/python.scm (python-pip): Update to 8.0.2.
[source]: Change to `pypi uri` syntax.

* gnu/packages/gnupg.scm (python-gnupg): Update to 0.3.8.
[source]: Change to 'pypi uri` syntax.

* doc/emacs.texi (Emacs Commands): Document "M-x guix-edit".
* doc/guix.texi (Invoking guix edit): Mention it.

After commit 13fe4891, Emacs package
includes "site-start.el", and it has a priority over
"/etc/emacs/site-start.el" on GuixSD because "/etc/emacs" is added to
the end of 'load-path'.

* gnu/system.scm (operating-system-environment-variables): Change
  EMACSLOADPATH to prepend "/etc/emacs" to 'load-path' instead of
  appending.

Fixes <http://bugs.gnu.org/22550>.
Reported by myglc2 <myglc2@gmail.com>.

* emacs/guix-emacs.el (guix-emacs-autoload-packages): Autoload Emacs
  packages installed in a system profile.

This code should belong to "guix-backend" as it is run after a REPL
operation to check if new Emacs packages have been installed and to
autoload them if needed.

* emacs/guix-emacs.el (guix-emacs-activate-after-operation)
(guix-emacs-load-autoloads-maybe): Move and rename to...
* emacs/guix-backend.el (guix-emacs-activate-after-operation)
(guix-repl-autoload-emacs-packages-maybe): ... this.
(guix-after-repl-operation-hook): Adjust for the renaming.

* emacs/guix-emacs.el: (guix-emacs-directories): New procedure.
(guix-emacs-find-autoloads-in-directory): Rename to...
(guix-emacs-find-autoloads): ... this.
(guix-emacs-load-autoloads): Remove.  Replace with...
(guix-emacs-autoload-packages): ... this.  New procedure.  At first,
find a list of directories with Emacs packages, then add them to
'load-path' and finally, load autoloads.
* doc/emacs.texi (Emacs Initial Setup): Adjust accordingly.

Reported by marusich on #guix.

* gnu/packages/curl.scm (curl)[source]: Use 'https' URL.

* gnu/packages/xdisorg.scm (xdotools): Upgrade to 3.20150503.1.
* gnu/packages/patches/xdotool-fix-makefile.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.

* gnu/packages/guile.scm (guile-next): Update to 2.1.2.  Add 'snippet'.

* gnu/packages/texinfo.scm (texinfo-6.1): New variable.
* gnu/packages/emacs.scm (emacs): Add comment about 'info.info'.

* gnu/packages/gnupg.scm (python-pygpgme, python2-pygpgme): New variables.
* gnu/packages/patches/pygpgme-disable-problematic-tests.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.

* gnu/packages/patches/icecat-re-enable-DHE-cipher-suites.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.
* gnu/packages/gnuzilla.scm (icecat)[source]: Add patch.

Thanks to Andy Wingo <wingo@igalia.com> for explaining this at
<https://lists.gnu.org/archive/html/guix-devel/2015-08/msg00439.html>.

* gnu/services/desktop.scm (pam-extension-procedure): New procedure.
(elogind-service-type): Extend PAM-ROOT-SERVICE-TYPE.

* gnu/system/pam.scm (<pam-configuration>): New record type.
(/etc-entry): Change 'services' parameter' to 'config'.  Honor the
'transform' field of CONFIG.
(extend-configuration): New procedure.
(pam-root-service-type): Use EXTEND-CONFIGURATION as the 'extend'
field.
(pam-root-service): Add #:transform parameter.  Service value is a
<pam-configuration>.

* gnu/system/pam.scm: Export <pam-service> and <pam-entry> accessors.

* gnu/packages/gtk.scm (murrine): New variable.

* gnu/packages/gtk.scm (gtk-engines): New variable.

* gnu/packages/statistics.scm (r)[inputs]: Drop lapack, which is
  recommended by the manual.
  [arguments]: Adapt configure flags.

* gnu/services/desktop.scm (elogind-service-type): Extend
PROFILE-SERVICE-TYPE.

* gnu/services/desktop.scm (upower-service-type): Extend
PROFILE-SERVICE-TYPE.

* gnu/packages/vpn.scm (vpnc)[inputs]: Add NET-TOOLS and IPROUTE.
[arguments]: Use 'modify-phases'.  Wrap 'vpnc-script'.

* gnu/packages/patches/icecat-bug-1146335-pt1.patch,
  gnu/packages/patches/icecat-bug-1146335-pt2.patch,
  gnu/packages/patches/icecat-limit-max-buffers-size-for-ANGLE.patch,
  gnu/packages/patches/icecat-CVE-2016-1930-pt01.patch,
  gnu/packages/patches/icecat-CVE-2016-1930-pt02.patch,
  gnu/packages/patches/icecat-CVE-2016-1930-pt03.patch,
  gnu/packages/patches/icecat-CVE-2016-1930-pt04.patch,
  gnu/packages/patches/icecat-CVE-2016-1930-pt05.patch,
  gnu/packages/patches/icecat-CVE-2016-1930-pt06.patch,
  gnu/packages/patches/icecat-CVE-2016-1930-pt07.patch,
  gnu/packages/patches/icecat-CVE-2016-1930-pt08.patch,
  gnu/packages/patches/icecat-CVE-2016-1930-pt09.patch,
  gnu/packages/patches/icecat-CVE-2016-1930-pt10.patch,
  gnu/packages/patches/icecat-CVE-2016-1930-pt11.patch,
  gnu/packages/patches/icecat-CVE-2016-1930-pt12.patch,
  gnu/packages/patches/icecat-CVE-2016-1930-pt13.patch,
  gnu/packages/patches/icecat-CVE-2016-1930-pt14.patch,
  gnu/packages/patches/icecat-CVE-2016-1930-pt15.patch,
  gnu/packages/patches/icecat-CVE-2016-1935.patch: Delete files.
* gnu-system.am (dist_patch_DATA): Remove them.
* gnu/packages/gnuzilla.scm (icecat): Update to 38.6.0-gnu1.
  [source]: Remove patches.

* gnu/packages/statistics.scm (r)[inputs]: Drop openblas.
  [arguments]: Adapt configure flags. This makes the build succeed
  on armhf-linux.