gnu: Add ruby-method-source.

* gnu/packages/ruby.scm (ruby-method-source): New variable.

gnu: sound-theme-freedesktop: Specify the applicable licenses.

* gnu/packages/libcanberra.scm (sound-theme-freedesktop)[license]:
  Specify the actual licenses that apply.

gnu: Set license of the bootstrap tools.

* gnu/packages/bootstrap.scm (package-from-tarball)[license]: Set to
  GPL3+.
* gnu/packages/make-bootstrap.scm (%static-binaries)[license]:
  Likewise.

gnu: r-stringr: Provide valid 'home-page' URL.

* gnu/packages/statistics.scm (r-stringr)[home-page]: Set to valid URL.

gnu: wpa-supplicant-light: Rename to wpa-supplicant-minimal.

* gnu/packages/admin.scm (wpa-supplicant-light): Rename to ...
  (wpa-supplicant-minimal): ...this.
  (wpa-supplicant): Use it.
* gnu/system/install.scm (installation-os): Use it.

gnu: Add Anonymous Pro fonts.

* gnu/packages/fonts.scm (font-anonymous-pro): New variable.

Signed-off-by: Alex Kost <alezost@gmail.com>

gnu: Add ruby-nokogiri.

Co-Authored-By: Pjotr Prins <pjotr.public01@thebird.nl>

* gnu/packages/ruby.scm (ruby-nokogiri): New variable.

gnu: Add ruby-mini-portile.

* gnu/packages/ruby.scm (ruby-mini-portile): New variable.

gnu: Add ruby-minitar.

* gnu/packages/ruby.scm (ruby-minitar): New variable.

gnu: Remove #:select from module import in (gnu packages geeqie).

* gnu/packages/geeqie.scm: Import all of (gnu packages ghostscript) instead
  of selectively only the lcms variable; this helps resolve problems with
  circular dependencies when including the module.

gnu: libtiff: Update home page.

* gnu/packages/image.scm (libtiff)[home-page]: Update.

gnu: vigra: Add support for OpenEXR.

* gnu/packages/image.scm (vigra)[inputs]: Add ilmbase and openexr.
  [arguments]: Augment #:configure-flags.

gnu: Order module imports in (gnu packages photo) alphabetically.

* gnu/packages/photo.scm: Order module imports alphabetically.

gnu: Add prefix to license imports in (gnu packages photo).

* gnu/packages/photo.scm: Import (guix licenses) with #:prefix license: to
  avoid an impending clash with the import of zlib from both (guix licenses)
  and (gnu packages compression).

gnu: guix: Enable container tests.

* gnu/packages/package-management.scm (guix-devel): Delete
  'disable-container-tests' build phase.

gnu: Add 'patches'.

* gnu/packages/patchutils.scm (patches): New variables.

gnu: Add python2-notmuch.

* gnu/packages/mail.scm (python2-notmuch): New variable.

gnu: ath9k-htc-firmware: Update to 1.4.0.

* gnu/packages/firmware.scm (ath9k-htc-firmware): Update to 1.4.0.

gnu: Rename librest to rest.

* gnu/packages/gnome.scm (rest): Rename from librest.

gnu: r: Drop texlive from native-inputs.

* gnu/packages/statistics.scm (r)[native-inputs]: Remove "texlive".