gnu: Add perl-super.

* gnu/packages/perl.scm (perl-super): New public variable.

gnu: perl-zip: Tweak synopsis & description.

* gnu/packages/compression.scm (perl-zip)[synopsis]: Capitalise consisently.
[description]: Use @code{}.

gnu: libksysguard: Update to 5.11.4.

* gnu/packages/kde.scm (libksysguard): Update to 5.11.4.

gnu: diffoscope: Update to 90.

* gnu/packages/package-management.scm (diffoscope): Update to 90.

ui: It's 2018 now!

* guix/ui.scm (show-version-and-exit): Change year to 2018.

doc: Update requirements in 'README'.

* README (Requirements): Update.

gnu: python-jupyter-console: Make it installable.

Fixes <https://bugs.gnu.org/29860>.
Reported by Johannes Laute <j.laute3@googlemail.com>.

* gnu/packages/python.scm (python-jupyter-console-minimal)[name]: New field.

gnu: xonsh: Update to 0.6.0.

* gnu/packages/shells.scm (xonsh): Update to 0.6.0.

gnu: crypto++: Don't use ‘-march=native’.

* gnu/packages/crypto.scm (crypto++)[arguments]: Add
‘disable-native-optimisation’ phase.

gnu: nasm: Update to 2.13.02.

* gnu/packages/assembly.scm (nasm): Update to 2.13.02.

gnu: Add xxhash.

* gnu/packages/digest.scm: New file
(xxhash): New public variable.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add new file.

gnu: wine: Add support for armhf and aarch64.

* gnu/packages/wine.scm (wine)[arguments]: Target armhf-linux when
building on armhf or aarch64.
[supported-systems]: Add armhf and aarch64 to supported systems.

gnu: gimp: Fix CVE-2017-{17784,17785,17786,17787,17789}.

* gnu/packages/patches/gimp-CVE-2017-17784.patch,
gnu/packages/patches/gimp-CVE-2017-17785.patch,
gnu/packages/patches/gimp-CVE-2017-17786.patch,
gnu/packages/patches/gimp-CVE-2017-17787.patch,
gnu/packages/patches/gimp-CVE-2017-17789.patch: New files.
* gnu/local.mk (dist_patch_DATA): Add them.
* gnu/packages/gimp.scm (gimp)[source]: Use them.

gnu: wine64-staging: Add 32-bit support.

* gnu/packages/wine.scm (wine64-staging)[inputs]: Add wine-staging.
[arguments]: Install libraries to /lib/wine64. Don't inherit phases. Add
'copy-win32-files phase.
[description]: Update description.
-

gnu: wine64: Add 32-bit support.

* gnu/packages/wine.scm (wine64)[inputs]: Add wine.
[arguments]: Install libraries to /lib/wine64. Don't inherit phases. Add
'copy-win32-files phase.
[description]: Update description.

gnu: wine: Install libraries to /lib/wine32.

* gnu/packages/wine.scm (wine)[arguments]: Install libraries to /lib/wine32.

gnu: Add kurly.

* gnu/packages/curl.scm (kurly): New variable.

gnu: Add go-github-com-davidjpeacock-cli.

* gnu/packages/golang.scm (go-github-com-davidjpeacock-cli): New variable.

gnu: Add go-github-com-aki237-nscjar.

* gnu/packages/golang.scm (go-github-com-aki237-nscjar): New variable.

gnu: Add go-github-com-alsm-ioprogress.

* gnu/packages/golang.scm (go-github-com-alsm-ioprogress): New variable.