gnu: colord: Add input libgudev.

* gnu/packages/gnome.scm (colord)[inputs]: Add libgudev.

gnu: json-glib: Update to 1.0.4, fix test.

* gnu/packages/gnome.scm (json-glib): Update to 1.0.4.
  [source]: Add snippet.

gnu: libsoup: Update to 2.52.1, enable vala bindings.

* gnu/packages/gnome.scm (vala): Update to 2.52.1.
  [native-inputs]: Add vala.
  [arguments]: Pass vapidir=$out/share/vala/vapi in the 'install' phase.

gnu: glib-networking: Update to 2.46.1.

* gnu/packages/gnome.scm (glib-networking): Update to 2.46.1.

gnu: gsettings-desktop-schemas: Update to 3.18.0.

* gnu/packages/gnome.scm (gsettings-desktop-schemas): Update to 3.18.0.

gnu: vala: Update to 0.30.0.

* gnu/packages/gnome.scm (vala): Update to 0.30.0.
  [arguments]: Run tests with "DBUS_FATAL_WARNINGS=0'.

gnu: librsvg: Fix tests.

GLib doesn't allow duplicate test case paths any more.

* gnu/packages/patches/librsvg-tests.patch: New file.
* gnu/packages/gnome.scm (librsvg)[source]: Add patch.
* gnu-system.am (dist_patch_DATA): Add it.

gnu: librsvg: Update to 2.40.11.

* gnu/packages/gnome.scm (librsvg): Update to 2.40.11.

Merge branch 'master' into core-updates

gnu: Add file-roller.

* gnu/packages/gnome.scm (file-roller): New variable.

Merge branch 'core-updates'

Merge branch 'master' into core-updates

gnu: Add shotwell.

* gnu/packages/gnome.scm (shotwell): New variable.

gnu: Add gexiv2.

* gnu/packages/gnome.scm (gexiv2): New variable.

gnu: Add libgee.

* gnu/packages/gnome.scm (libgee): New variable.

gnu: librsvg: Update to 2.40.10.

* gnu/packages/gnome.scm (librsvg): Update to 2.40.10.

gnu: libgsf: Update to 1.14.34.

* gnu/packages/gnome.scm (libgsf): Update to 1.14.34.

Merge branch 'master' into core-updates

gnu: Rename librest to rest.

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

gnu: clutter: Add "doc" output.

* gnu/packages/gnome.scm (clutter)[outputs]: New field.
  [arguments]: Pass --with-html-dir.