gnu: raptor2: Fix heap overflow bug.

* gnu/packages/patches/raptor2-heap-overflow.patch: New file.
* gnu/local.mk (dist_patch_DATA): Register it.
* gnu/packages/rdf.scm (raptor2): Use it.

gnu: artanis: Update to 0.2.1.

* gnu/packages/guile.scm (artanis): Update to 0.2.1.
[inputs]: Switch to GUILE-2.2.
[arguments]: Adjust #:make-flags for Guile 2.2.  Take .go files from
lib/guile/2.2.  Add 'wrap-art' phase.
* gnu/packages/patches/artanis-fix-Makefile.in.patch: Remove.
* gnu/local.mk (dist_patch_DATA): Remove it.

gnu: gnuastro: Update to 0.3.

* gnu/packages/astronomy.scm (gnuastro): Update to 0.3.
Adjust as suggested by 'guix lint'.

doc: Add Hartmut to the @copying section.

* doc/guix.texi: Add a copyright line for Hartmut.

doc: Add missing node in master menu.

* doc/guix.texi (Top): Add missing ref to "Debugging Build Failures".

gnu: php: Update to 7.1.6.

* gnu/packages/php.scm (php): Update to 7.1.6.

gnu: minetest: Update to 0.4.16.

* gnu/packages/games.scm (minetest-data, minetest): Update to 0.4.16.

gnu: certbot, python-acme: Update to 0.15.0.

* gnu/packages/tls.scm (certbot, python-acme, python2-acme): Update to 0.15.0.
(python-acme, python2-acme)[arguments]: Remove 'patch-dependency' phase.
This issue was fixed upstream:
https://github.com/certbot/certbot/commit/d0e471dc8093bd0d08c5a739e5cf9677240d9c0e

gnu: kde.scm, kde-frameworks.scm: Add and update comments.

* gnu/packages/kde-frameworks.scm
  (kpackage,plasma-framework)[arguments]: Update comment (number of failed
  tests).
  (kdeclarative)[arguments]<#:phases>: Update comment.
  (bluez-qt,knotifications,kpty,ktexteditor,ktextwidgets,solid)[inputs]: Add a
  todo comment.
  (kguiaddons): Add a todo comment.
  (phonon)[native-inputs]: Add a todo comment.
* gnu/packages/kde-frameworks.scm (kauth)[arguments]<#:phases>: Add a todo
  comment.

gnu: kwindowsystem: Fix some test-cases (test-suite still disabled).

Make five tests pass, three are still failing – thus the test-suite is still
disabled. This commit's aim is to retain the progress.

* gnu/packages/kde-frameworks.scm (kwindowsystem)[native-inputs]: Add dbus.
  [arguments]<#:test?>: Change comment. <#:phases>: Replace phase `check` by
  new one befind 'install'.

gnu: kwidgetsaddons: Re-enable tests.

* gnu/packages/kde-frameworks.scm (kwidgetsaddons)[arguments]: Test-suite
   is now passing; reenable it.

gnu: kiconthemes: Re-enable tests.

* gnu/packages/kde-frameworks.scm (kiconthemes)[arguments]: Test-suite
  is now passing; reenable it.

gnu: kwallet: Use gpgme instead of gpgmepp.

The C++-bindings are part of gpgme since version 1.7.

* gnu/packages/kde-frameworks.scm(kwallet)[inputs]: Replace gpgmepp by
  gpgme.

gnu: gpgmepp: Superseded by gpgme.

The C++-bindings are part of gpgme since version 1.7.

* gnu/packages/kde-frameworks.scm (gpgmepp)[properties]: New field.

gnu: sonnet: Add optional input (spell-checker).

* gnu/packages/kde-frameworks.scm (sonnet)[inputs]: Add hunspell; add
  todo comment for other language's spell-checker.

gnu: kpackage: Add more optional inputs.

* gnu/packages/kde-frameworks.scm (kpackage)[inputs]: Add kdoctools.

gnu: plasma-framework: Add more optional inputs.

* gnu/packages/kde-frameworks.scm (plasma-frameworks)[native-inputs]: Add
  pkg-config. [inputs]: Add kwayland.

gnu: ktexteditor: Add more optional inputs.

* gnu/packages/kde-frameworks.scm (ktexteditor)[native-inputs]: Add
  pkg-config.

gnu: kinit: Add more optional inputs.

* gnu/packages/kde-frameworks.scm (kinit)
  [native-inputs]: Add pkg-config.
  [inputs]: Add kdoctools, libcap.

gnu: kio: Add more optional and recommended inputs.

* gnu/packages/kde-frameworks.scm (kio)[inputs]: Add mit-krb5, qtscript.