Merge branch 'master' into core-updates

gnu: Use HTTPS for gnome.org and subdomains.

* gnu/packages/fonts.scm (font-bitstream-vera)[home-page]: Use HTTPS.
* gnu/packages/glib.scm (glib)[home-page]: Likewise.
* gnu/packages/gnome.scm (gcr, libgnome-keyring, gnome-keyring, evince)
(gnome-icon-theme, libgsf, gnome-mime-data, vala, vte, python2-rsvg)
(glib-networking, gnome-settings-daemon, libchamplain, grilo, grilo-plugins)
(gjs, zenity, mutter, network-manager, network-manager-applet, gdm)
[home-page]: Likewise.
* gnu/packages/gtk.scm (gtk-engines, murrine)[home-page]: Likewise.

Merge branch 'master' into core-updates

gnu: gtk-doc: Fix dblatex problem.

* gnu/packages/gtk.scm (gtk-doc)[arguments]: Add phase "set-HOME".

gnu: Switch guile-cairo and dependents to Guile 2.2 again.

Fixes <https://bugs.gnu.org/27551>.
Reported by Leo Famulari <leo@famulari.name>.

This reinstates the following commits:

  e3ddb1e83 * gnu: guile-cairo: Switch to Guile 2.2.
  ae5c6ef39 * gnu: guile-gnome: Update to 2.16.5.
  0fd8013fc * gnu: guile-rsvg: Update to commit 05c6a2fd.
  66b9183c4 * gnu: guile-lib: Switch to Guile 2.2.

and adds the following changes:

* gnu/bootloader/grub.scm (svg->png): Add 'package->derivation' call for
GUILE-2.2.  Pass #:guile-for-build to 'gexp->derivation'.
* gnu/build/svg.scm (svg->png): Add 'em' and 'ex' to the 'let-values'
form to account for all the values returned by
'rsvg-handle-get-dimensions', which Guile 2.2 does not truncate.

Revert "gnu: guile-lib: Switch to Guile 2.2."

This reverts commit 66b9183c4f634d9b2ae41176e4eddf0ebb218532.

Revert "gnu: guile-rsvg: Update to commit 05c6a2fd."

This reverts commit 0fd8013fcaafa9f53c7e304b2573c0314471df89.

Revert "gnu: guile-gnome: Update to 2.16.5."

This reverts commit ae5c6ef39378a6fa1f6bf06e8c7f50ab190c485d.

Revert "gnu: guile-cairo: Switch to Guile 2.2."

This commit caused the build of grub-image.png to fail, prevent the
build of grub.cfg and reconfiguring of GuixSD:

<https://bugs.gnu.org/27551>

This reverts commit e3ddb1e83296c10338d35bc687772242b2f5eac6.

gnu: guile-cairo: Switch to Guile 2.2.

This patch adjusts dependent packages accordingly.

* gnu/packages/gtk.scm (guile-cairo)[inputs]: Switch to GUILE-2.2 and
GUILE-LIB.
(guile-rsvg)[inputs]: Likewise.
(guile-present)[inputs]: Likewise.
(guile-gnome)[inputs]: Likewise.
* gnu/packages/plotutils.scm (guile-charting)[inputs]: Switch go
GUILE-2.2.

gnu: guile-gnome: Update to 2.16.5.

* gnu/packages/gtk.scm (guile-gnome): Update to 2.16.5.
[arguments] <pre-configure>: Use @GUILE_EFFECTIVE_VERSION@ instead of
"2.0".
[properties]: New field.

gnu: guile-rsvg: Update to commit 05c6a2fd.

* gnu/packages/gtk.scm (guile-rsvg): Update to commit 05c6a2fd.
[source](url): Change to gitlab.com.
(snippet): Use @GUILE_EFFECTIVE_VERSION@ instead of "2.0".
* gnu/packages/patches/guile-rsvg-pkgconfig.patch: Use
"$GUILE_EFFECTIVE_VERSION" instead of "2.0".

gnu: guile-lib: Switch to Guile 2.2.

* gnu/packages/guile.scm (guile-lib)[inputs]: Replace GUILE-2.0 with
GUILE-2.2.
(guile2.0-lib): New variable.
(guile2.2-lib): Mark as deprecated.
* gnu/packages/guile.scm (guile-ics): Use GUILE2.0-LIB.
* gnu/packages/gtk.scm (guile-cairo, guile-rsvg)
(guile-present, guile-gnome): Likewise.
* gnu/packages/skribilo.scm (skribilo): Likewise.

Merge branch 'master' into core-updates

This merge commit includes a fix for CVE-2017-6512 in Perl 5.26.0.

Merge branch 'staging'

gnu: gtksourceview: Update to 3.24.2.

* gnu/packages/gtk.scm (gtksourceview): Update to 3.24.2.

gnu: pango: Update to 1.40.6.

* gnu/packages/gtk.scm (pango): Update to 1.40.6.

gnu: atk: Update to 2.24.0.

* gnu/packages/gtk.scm (atk): Update to 2.24.0.

gnu: at-spi2-core: Update to 2.24.1.

* gnu/packages/gtk.scm (at-spi2-core): Update to 2.24.1.

gnu: at-spi2-atk: Update to 2.24.1.

* gnu/packages/gtk.scm (at-spi2-atk): Update to 2.24.1.