gnu: Add ruby-minitest-pretty-diff.
* gnu/packages/ruby.scm (ruby-minitest-pretty-diff): New variable.
gnu: Add ruby-minitest-focus.
* gnu/packages/ruby.scm (ruby-minitest-focus): New variable.
gnu: Add ruby-turn.
* gnu/packages/ruby.scm (ruby-turn): New variable.
gnu: Add aria2.
* gnu/packages/bittorrent.scm (aria2): New variable.
gnu: c-ares: Move to adns.scm.
* gnu/packages/aria2.scm (c-ares): Move to...
* gnu/packages/adns.scm (c-ares): ... here.
* gnu/packages/aria2.scm: Remove file.
* gnu-system.am (GNU_SYSTEM_MODULES): Remove aria2.scm.
gnu: libressl: Update to 2.2.5.
* gnu/packages/tls.scm (libressl): Update to 2.2.5.
gnu: nginx: Update to 1.8.1 [fixes CVE-2016-{0742,0746,0747}].
* gnu/packages/web.scm (nginx): Update to 1.8.1.
doc: Show how to boot result of 'vm-image'.
* doc/guix.texi (Running GuixSD in a VM): New node.
(Invoking guix system): Add reference to 'Running GuixSD in a VM'.
gnu: alsa-modular-synth: Update to 2.1.2.
* gnu/packages/audio.scm (alsa-modular-synth): Update to 2.1.2.
gnu: Add ruby-ttfunk.
* gnu/packages/ruby.scm (ruby-ttfunk): New variable.
gnu: Add ruby-ascii85.
* gnu/packages/ruby.scm (ruby-ascii85): New variable.
gnu: Add ruby-afm.
* gnu/packages/ruby.scm (ruby-afm): New variable.
gnu: Add ruby-rc4.
* gnu/packages/ruby.scm (ruby-rc4): New variable.
gnu: Add ruby-hashery.
* gnu/packages/ruby.scm (ruby-hashery): New variable.
gnu: Add ruby-rubytest-cli.
* gnu/packages/ruby.scm (ruby-rubytest-cli): New variable.
gnu: Add ruby-lemon.
* gnu/packages/ruby.scm (ruby-lemon): New variable.
gnu: Add ruby-ae.
* gnu/packages/ruby.scm (ruby-ae): New variable.
gnu: Add ruby-qed.
* gnu/packages/ruby.scm (ruby-qed): New variable.
gnu: Add ruby-brass.
* gnu/packages/ruby.scm (ruby-brass): New variable.
gnu: Add ruby-rubytest.
* gnu/packages/ruby.scm (ruby-rubytest): New variable.