Suggested by <swedebugia@riseup.net>.

* doc/guix.texi (Using the Configuration System): Add
@unnumberedsubsubsec.  Explain how to remove services from a list.
Mention (gnu system).

* gnu/services/avahi.scm: Export 'avahi-service-type'.

* gnu/packages/admin.scm (isc-dhcp): Update bundled bind to 9.9.8-P3.

* gnu/packages/dns.scm (bind-utils): Update to 9.10.3-P3.

* gnu/packages/patches/linux-libre-CVE-2016-0728.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.
* gnu/packages/linux.scm (linux-libre)[source]: Add patch.

* gnu/packages/video.scm (obs)[inputs]: Add v4l-utils.

* gnu/packages/video.scm (v4l-utils): New variable.

* gnu/packages/patches/arb-ldconfig.patch: Correct erroneously committed file.

This is a follow-up to commit ffc8f345.

* gnu/packages/algebra.scm (arb)[source]: Update to 2.8.1. Add patch.
* gnu/packages/patches/arb-ldconfig.patch: New file.
* gnu-system.am (dist_patch_DATA): Register patch.

Fixes <http://bugs.gnu.org/22391>.

* tests/cran.scm (beautify-description: use double spacing,
beautify-description: transform fragment into sentence). Move
from here ...
* tests/import-utils.scm: ... to here. New file.
* Makefile.am (SCM_TESTS): Add import-utils.

* guix/import/gem.scm (make-gem-sexp): Add synopsis argument.
(gem->guix-package): Pass unbeautified synopsis to make-gem-sexp.
* tests/gem.scm: Adapt it.

* guix/import/cran.scm (%bioconductor-updater,
latest-bioconductor-release, bioconductor-package?): New procedures.
(cran->guix-package): Support repositories other than CRAN.
(%bioconductor-url, %bioconductor-svn-url): New variables.
(description->package): Update signature to distinguish between packages
from different repositories.
(latest-release): Rename procedure ...
(latest-cran-release): ... to this.
(cran-package?): Do not assume all R packages are available on CRAN.
* tests/cran.scm: Update tests.
* guix/scripts/import/cran.scm: Add "--archive" option and default to
CRAN.
* guix/scripts/refresh.scm (%updaters): Add "%bioconductor-updater".
* doc/guix.texi: Document Bioconductor importer and updater.

* gnu/packages/enlightenment.scm (enlightenment): Update to 0.20.3.

* gnu/packages/xiph.scm (libshout): Update to 2.4.1.

* gnu/packages/xiph.scm (opusfile): Update to 0.7.

* gnu/packages/xiph.scm (opus): Update to 1.1.2.

Suggested by Mark H Weaver <mhw@netris.org>.

* gnu/packages/music.scm (lilypond)[properties]: New field.

Suggested by Mark H Weaver <mhw@netris.org>.

* build-aux/hydra/gnu-system.scm (package->alist): Add
'max-silent-time' pair.

* guix/scripts/build.scm (show-build-options-help)
(%standard-build-options): Add --keep-going.
* guix/scripts/build.scm (set-build-options-from-command-line): Honor
it.
* doc/guix.texi (Invoking guix build): Document it.

* tests/derivations.scm ("derivation fails but keep going"): New test.

* gnu/packages/mail.scm (fdm): Adjusted license field

* gnu/packages/mail.scm (fdm): New variable.

* gnu/packages/linux.scm (linux-libre-4.2.5): New variable.

This is a followup to 0919f5f4.

* test-env.in: Remove occurrences of 'NIX_SETUID_HELPER'.

* gnu/packages/video.scm (mpv): Update to 0.15.0.

* gnu/packages/emacs.scm (magit): Update to 2.4.0.

* gnu/packages/sxiv.scm (sxiv): Update to 1.3.2.

* gnu/packages/games.scm (manaplus): Update to 1.6.1.16.

* doc/guix.texi (Build Environment Setup, Substitutes): Document
'http_proxy'.

* tests/derivations.scm ("derivation #:leaked-env-vars"): New test.

* doc/guix.texi (Running the Test Suite): Explain 'TESTS'.

* emacs/guix-ui-package.el (guix-search-by-name): New command.
* doc/emacs.texi (Emacs Commands): Document it.

* emacs/guix-ui-package.el (guix-search-by-name): Rename to...
  (guix-packages-by-name): ... this.  Complete package name.
* doc/emacs.texi (Emacs Commands): Likewise.

* gnu/packages/python.scm (python2-jsonschema)[inputs]: Add
python2-functools32.
(python2-wheel)[native-inputs]: Specify python2-jsonschema. Add
python2-functools32.
(python2-requests)[propagated-inputs]: Specify python2-wheel.
(python2-ipython)[inputs]: Specify python2-jsonschema, python2-requests.
(python2-rauth)[propagated-inputs]: Specify python2-requests.
* gnu/packages/openstack.scm (python2-requests-mock)[propagated-inputs]:
Specify python2-requests.
(python2-tempest-lib)[propagated-inputs]: Specify python2-jsonschema.
(python2-oslosphinx)[propagated-inputs]: Specify python2-requests.
(python2-keystoneclient)[porpagated-inputs]: Specify python2-requests.
[native-inputs]: Specify python2-oslosphinx, python2-requests-mock,
python2-tempest-lib.
(python2-swiftclient)[propagated-inputs]: Specify python2-requests,
python2-oslosphinx.

* gnu/packages/datamash.scm (datamash): Update to 1.1.0.

* build-aux/compile-all.scm: New file.
* Makefile.am (EXTRA_DIST): Add it.
(%.go, make-go): New rules.

* gnu/packages/databases.scm (mariadb): Update to 10.0.23.

* gnu/packages/rsync.scm (rsync): Update to 3.1.2.

* gnu/packages/music.scm (solfege)[inputs]: Add "lilypond".

* gnu/packages/music.scm (bristol)[arguments]: Add phase
"remove-sse-flags" to remove unsupported optimizations on platforms
other than x86_64 and i686.