gnu: bpython: Update to 0.17.1.

* gnu/packages/python.scm (bpython): Update to 0.17.1.

gnu: musl: Use HTTPS home page.

* gnu/packages/musl.scm (musl)[home-page]: Use HTTPS.

gnu: musl: Update to 1.1.19.

* gnu/packages/musl.scm (musl): Update to 1.1.19.

gnu: parallel: Update to 20180222.

* gnu/packages/parallel.scm (parallel): Update to 20180222.

gnu: mesa-utils: Update to 8.4.0.

* gnu/packages/gl.scm (mesa-utils): Update to 8.4.0.

gnu: dolphin-emu: Enable Vulkan video backend.

* gnu/packages/emulators.scm (dolphin-emu): Enable Vulkan video backend.
[inputs]: Add vulkan-icd-loader.
[arguments]: Rename 'generate-fonts to
'generate-fonts&hardcore-libvulkan-path. Hardcode libvulkan.so.

gnu: you-get: Update to 0.4.1025.

* gnu/packages/video.scm (you-get): Update to 0.4.1025.

gnu: Add rhash.

* gnu/packages/crypto.scm (rhash): New variable.

services: certbot: Allow to set a deploy hook.

* doc/guix.texi (Certificate Services): Document it.
* gnu/services/certbot.scm (<certificate-configuration>, certbot-command): Add
it.

services: certbot: Add verbosity.

The certificate name wasn't displayed if it wasn't being renewed.

* gnu/services/certbot.scm (certbot-command): Print certificate name before
running the associated command.

services: certbot: Allow to set RSA key size.

* doc/guix.texi (Certificate Services): Document it.
* gnu/services/certbot.scm (<cerbot-configuration>, certbot-command,
certbot-activation, certbot-nginx-server-configurations): Add it.

doc: Fix typo in certbot-configuration description.

* doc/guix.texi (Certificate Services): Fix typo.

services: certbot: Associate one certificate with several domains.

* doc/guix.texi (Certificate Services): Document <certificate-configuration>,
the change from domains to certificates and the fact that their path is now
derived from their name.
* gnu/services/certbot.scm (<certificate-configuration>): Add and export it.
(certbot-configuration, certbot-command, certbot-activation,
certbot-nginx-server-configurations, certbot-service-type): Replace 'domains'
with 'certificates'.
(certbot-nginx-server-configurations): Use only one nginx-server-configuration
and use all certificate domains as the server-name.

services: certbot: Get certbot to run non-interactively.

* doc/guix.texi (Certificate Services): Add email field and link to the ACME
Subscriber Agreement.
* gnu/services/certbot.scm (<certbot-configuration>, certbot-command,
certbot-activation, certbot-nginx-server-configurations): Add email field.
(certbot-command): Add '-n' and '--agree-tos' options.
(certbot-service-type): Remove default-value.

services: certbot: Refactor certbot command.

* gnu/services/certbot.scm (certbot-renewal-jobs, certbot-activation):
Refactor common code into certbot-command.

services: certbot: Rename 'host' to 'domain'.

* doc/guix.texi (Certificate Services): Rename 'host' to 'domain'.
* gnu/services/certbot.scm (<certbot-configuration>, certbot-renewal-jobs,
certbot-activation, certbot-nginx-server-configurations,
certbot-service-type): Rename 'host' to 'domain'.

services: certbot: Fix indentation.

* gnu/services/certbot.scm (certbot-activation): Fix indentation.

services: certbot: Run certbot twice a day at a random minute.

* doc/guix.texi (Certificate Services): Document it.
* gnu/services/certbot.scm (certbot-renewal-jobs): Change job's time
specification.

services: certbot: Listen on IPv6.

* gnu/services/certbot.scm (certbot-nginx-server-configurations): Listen on
IPv6 too.

gnu: american-fuzzy-lop: Change custom qemu input.

* gnu/packages/debug.scm (american-fuzzy-lop)[inputs]: Custom-qemu now
inherits from private qemu-minimal-2.10.
* gnu/packages/bootloaders.scm (qemu-minimal-2.10): Add note to move
variable to gnu/packages/debug.scm when no longer needed in
bootloaders.scm.