Merge branch 'master' into core-updates

gnu: linux-libre@4.1: Update to 4.1.29.

* gnu/packages/linux.scm (linux-libre-4.1): Update to 4.1.29.

gnu: Add libgnomekbd.

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

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

gnu: Add s6-linux-utils.

* gnu/packages/skarnet.scm (s6-linux-utils): New variable.

Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: Add s6-portable-utils.

* gnu/packages/skarnet.scm (s6-portable-utils): New variable.

Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: Add s6-rc.

* gnu/packages/skarnet.scm (s6-rc): New variable.

Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: units: Update to 2.13.

* gnu/packages/maths.scm (units): Update to 2.13.

gnu: Add Go 1.6.

* gnu/packages/golang.scm (go-1.6): New variable.

Co-authored-by: Efraim Flashner <efraim@flashner.co.il>
Co-authored-by: Andy Wingo <wingo@igalia.com>
Co-authored-by: Ludovic Courtès <ludo@gnu.org>

gnu: imagemagick: Update to 6.9.5-4 [fixes CVE-2016-6491].

* gnu/packages/imagemagick.scm (imagemagick): Update to 6.9.5-4.

gnu: openttd: Update to 1.6.1.

* gnu/packages/games.scm (openttd): Update to 1.6.1 and expand the
package description.

Signed-off-by: Andreas Enge <andreas@enge.fr>

gnu: ecl: Use "kernel-headers" instead of "linux-headers" to designate input.

* gnu/packages/lisp.scm (ecl)[arguments]: Use "kernel-headers" as the
identifier for an input.

This is a follow-up to commit 55de892b435657f82a25c6499174d09b4a680f15.

Signed-off-by: Andreas Enge <andreas@enge.fr>

gnu: rapicorn: Add patch to handle isnan.

* gnu/packages/patches/rapicorn-isnan.patch: New file.
* gnu/packages/graphics.scm (rapicorn)[source]: Add patch.
* gnu/local.mk (dist_patch_DATA): Register patch.

gnu: fastcap: Add input ghostscript.

* gnu/packages/engineering.scm (fastcap)[native-inputs]: Add ghostscript.

This is a follow-up to commit e83a13faa221fe65eb86dee224a3f2aab9e13c60.

gnu: zsh: Update to 5.2.

* gnu/packages/zsh.scm (zsh): Update to 5.2.

gnu: tcc: Use "kernel-headers" instead of "linux-headers" to designate input.

* gnu/packages/c.scm (tcc)[arguments]: Use "kernel-headers" as identifier
for an input.

This is a follow-up to commit 55de892b435657f82a25c6499174d09b4a680f15.

gnu: dealii: Update to 8.4.1.

* gnu/packages/maths.scm (dealii): Update to 8.4.1.
* gnu/packages/patches/dealii-p4est-interface.patch: Remove file.

gnu: wine: Update to 1.9.15.

* gnu/packages/wine.scm (wine): Update to 1.9.15.

gnu: python-alembic: Update to 0.8.7.

* gnu/packages/python.scm (python-alembic): Update to 0.8.7.

gnu: perl-xml-libxml: Update to 2.0128.

* gnu/packages/xml.scm (perl-xml-libxml): Update to 2.0128.

gnu: glibc-locales: Fix build.

* gnu/packages/patches/glibc-locales.patch: Adjust to glibc-2.23.
* gnu/packages/base.scm (glibc-locales)[arguments]:
Pass 'lib_cv_complocaledir'.