gnu: Add tklib.

* gnu/packages/tcl.scm (tklib): New variable.

services: cuirass: Add host option.

* gnu/services/cuirass.scm (<cuirass-configuration>): Add host option.
(cuirass-shepherd-service): Pass host option.
* doc/guix.texi (Continuous Integration): Document it.

gnu: cuirass: Update development snapshot.

* gnu/packages/ci.scm (cuirass): Update to commit 87ad259.

gnu: libunwind: Update to 1.2.1.

* gnu/packages/libunwind.scm (libunwind): Upate to 1.2.1.
[source]: Remove 'libunwind-CVE-2015-3239.patch'.
* gnu/packages/patches/libunwind-CVE-2015-3239.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Remove it.

gnu: Add uim, uim-gtk and uim-qt.

* gnu/packages/xorg.scm (uim, uim-gtk, uim-qt): New variables.

tests: install: Switch to modifying the gc-root-service-type.

Fixes <https://bugs.gnu.org/28600>.
Fixes a regression introduced in
4e854b1814a9216ae7cc90aef4d82fd989a519c3.
Reported by Christopher Baines <mail@cbaines.net>.

* gnu/tests/install.scm (operating-system-with-gc-roots): Use
'simple-service' to extend GC-ROOT-SERVICE-TYPE instead of instantiating
it.

gnu: Add gpa.

* gnu/packages/gnupg.scm (gpa): New variable.

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

gnu: Add lxqt-build-tools.

* gnu/packages/lxqt.scm (lxqt-build-tools): New variable.

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

tests: mcron: Adjust use of 'wait-for-file'.

Fixes a regression introduced in
8bd5231485cdeb02078c4294badb3a1e7caa0fe0, whereby returning #<eof> would
no longer work (since #<eof> would be in the cdr of the result, and thus
it would not get converted to a string.)

* gnu/tests/base.scm (run-mcron-test)["root's job with command"]: Pass
  #:read to 'wait-for-file'.

gnu: libgtop: Update to 2.38.0.

* gnu/packages/gnome.scm (libgtop): Update to 2.38.0.

gnu: lm-sensors: Add "lib" output.

* gnu/packages/linux.scm (lm-sensors)[outputs]: Add "lib".
[arguments]: Fix up make flags.
(xsensors)[inputs]: Adjust accordingly.

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

gnu: certbot, python-acme: Update to 0.18.2.

* gnu/packages/tls.scm (certbot, python-acme): Update to 0.18.2.
* gnu/packages/patches/python-acme-dont-use-openssl-rand.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Remove it.

gnu: i3-wm: Update to 4.14.1.

* gnu/packages/wm.scm (i3-wm): Update to 4.14.1.

gnu: openntpd: Update to 6.2p2.

* gnu/packages/ntp.scm (openntpd): Update to 6.2p2.

gnu: fontforge: Update to 20170731.

* gnu/packages/fontutils.scm (fontforge): Update to 20170731.
[source]: Remove patch, remove snippet.
[arguments]: Enable tests. Remove phase to build showttf.
[inputs]: Use python-wrapper instead of python.
[home-page]: Update to new home page.
* gnu/packages/patches/fontforge-svg-modtime.patch: Remove file.
* gnu/local.mk (dist_patch_DATA): Remove it.

gnu: imagemagick: Update to 6.9.9-15.

* gnu/packages/imagemagick.scm (imagemagick): Update to 6.9.9-15.

gnu: lvm2: Update to 2.02.174.

* gnu/packages/linux.scm (lvm2): Update to 2.02.174.

gnu: Add emacs-olivetti.

* gnu/packages/emacs.scm (emacs-olivetti): New variable.

gnu: python-cython: Update to 0.27.

* gnu/packages/python.scm (python-cython): Update to 0.27.

gnu: ibus-libpinyin: Update to 1.9.2.

* gnu/packages/ibus.scm (ibus-libpinyin): Update to 1.9.2.
[inputs]: Replace "python-2" with "python" and python2-pyxdg with
python-pyxdg.