services: dbus, polkit: Add default value.

* gnu/services/dbus.scm (dbus-root-service-type)[default-value]: New
field.
(polkit-service-type)[default-value]: New field.

services: Make error message less scary.

* gnu/services.scm (service-back-edges): Show the type name of SERVICE
instead of SERVICE in error message.

store: Account for 'add-to-store' in RPC statistics.

* guix/store.scm (add-to-store): Add call to 'record-operation'.

gnu: offlineimap: Update to 7.1.2.

* gnu/packages/mail.scm (offlineimap): Update to 7.1.2.

gnu: sshuttle: Move python-pytest-runner.

* gnu/packages/vpn.scm (sshuttle)[native-inputs]: Mark
python-pytest-runner as a test-only dependency, following up commit
447f75825fbe473f0684d4664dde01d9d3a02d75.

gnu: libtiff: Fix two integer overflows.

* gnu/packages/patches/libtiff-tiffycbcrtorgb-integer-overflow.patch,
gnu/packages/patches/libtiff-tiffycbcrtorgbinit-integer-overflow.patch:
New files.
* gnu/local.mk (dist_patch_DATA): Add them.
* gnu/packages/image.scm (libtiff-4.0.8)[source]: Use them.

gnu: ncurses: Fix CVE-2017-10684 and CVE-2017-10685.

* gnu/packages/patches/ncurses-CVE-2017-10684-10685.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/ncurses.scm (ncurses)[replacement]: New field.
(ncurses/fixed): New variable.

gnu: poppler: Fix null pointer dereferences.

* gnu/packages/patches/poppler-fix-crash-with-broken-documents.patch: New
file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/pdf.scm (poppler/fixed)[source]: Add the patch.

gnu: emacs-exwm-x: Update to 1.7.2.

* gnu/packages/emacs.scm (emacs-exwm-x): Update to 1.7.2.
[propagated-inputs]: Add emacs-use-package.

Signed-off-by: Arun Isaac <arunisaac@systemreboot.net>

gnu: unshield: Remove incorrect '"'.

* gnu/packages/compression.scm (unshield): Remove incorrect '"'.

build, vm: Use "GuixSD" or "GUIXSD" as volume label.

* gnu/build/vm.scm (initialize-hard-disk): Use "GuixSD" as label.
* gnu/system/install.scm (installation-os): Use "GuixSD" as label.
* gnu/system/vm.scm (system-disk-image): Use "GuixSD" or "GUIXSD" as volume
label.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>

gnu: Add et.

* gnu/packages/ssh.scm (et): New variable.

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

daemon: Allow compilation with GCC 4.9.

Reported by Ricardo Wurmus.

* nix/nix-daemon/nix-daemon.cc (acceptConnection): Remove intermediate
'inaddr' variables that relied on implicit casts.  This fixes
compilation with GCC 4.9.

gnu: emacs: Build with imagemagick support.

* gnu/packages/emacs.scm (emacs)[inputs]: Add imagemagick.

Signed-off-by: Arun Isaac <arunisaac@systemreboot.net>

syscalls: Adjust 'dirent64' struct for GNU/Hurd.

Reported by rennes@openmailbox.org.

* guix/build/syscalls.scm (file-type->symbol): New procedure.
(%struct-dirent-header): Rename to...
(%struct-dirent-header/linux): ... this.  Rename introduced bindings as
well.
(%struct-dirent-header/hurd): New C struct.
(define-generic-identifier): New macro.
(read-dirent-header, %struct-dirent-header, sizeof-dirent-header):
Define in terms of 'define-generic-identifier'.

gnu: nss-pam-ldapd: Update to 0.9.8.

* gnu/packages/openldap.scm (nss-pam-ldapd): Update to 0.9.8.

gnu: qtractor: Update to 0.8.3.

* gnu/packages/music.scm (qtractor): Update to 0.8.3.

gnu: guitarix: Update to 0.35.4.

* gnu/packages/audio.scm (guitarix): Update to 0.35.4.

gnu: guitarix-lv2: Remove inputs override.

* gnu/packages/audio.scm (guitarix-lv2)[inputs]: Remove.

gnu: gtk-doc: Fix dblatex problem.

* gnu/packages/gtk.scm (gtk-doc)[arguments]: Add phase "set-HOME".