This allows 'guix' commands to talk to a remote store over SSH.

* guix/store.scm (connect-to-daemon)[connect]: Call 'resolve-interface'
for unknown URI schemes.
* guix/store/ssh.scm: New file.
* Makefile.am (MODULES): Add it.
* doc/guix.texi (The Store): Document it.  Mark remote access as
experimental.

* guix/ssh.scm (remote-daemon-channel): New procedure.
(connect-to-remote-daemon): Implement in terms of it.

* guix/scripts/copy.scm (%compression, open-ssh-session): Move to...
* guix/ssh.scm: ... here.  Use '&message' conditions instead of calling
'leave'.

* guix/scripts/offload.scm (host-key->type+key, machine-load)
(process-request, guix-offload): Do not use '_' as a 'match' pattern.

* guix/store.scm (open-inet-socket): New procedure.
(connect-to-daemon): Support the 'guix' URI scheme.
* doc/guix.texi (The Store): Document it.

* guix/store.scm (system-error-to-connection-error): New macro.
(open-unix-domain-socket): Use it instead of 'catch'.

* guix/store.scm (%daemon-socket-file): Rename to...
(%daemon-socket-uri): ... this.
(connect-to-daemon): New procedure.
(open-connection): Rename 'file' to 'uri'.  Use 'connect-to-daemon'
instead of 'open-unix-domain-socket'.
* guix/tests.scm (open-connection-for-tests): Rename 'file' to 'uri'.
* tests/guix-build.sh: Add tests.
* tests/store.scm ("open-connection with file:// URI"): New tests.

* gnu/packages/guile.scm (guile-2.2): Update to 2.2.2.

* gnu/packages/image.scm (imlib2): Update to 1.4.10.

* gnu/packages/sdl.scm (sdl-gfx): Update to 2.0.26.

* gnu/packages/audio.scm (portaudio): Update to 190600.20161030.
* gnu/packages/patches/portaudio-audacity-compat.patch: Adjust line endings.

* gnu/packages/audio.scm (soxr): Update to 0.1.2.

* gnu/packages/python.scm (python-pyopenssl, python2-pyopenssl): Update to 17.0.0.
[native-inputs]: Change PYTHON-PYTEST to PYTHON-PYTEST-3.0.
* gnu/packages/patches/python-pyopenssl-skip-network-test.patch: Adjust.

* gnu/packages/bioinformatics.scm (proteinortho): Update to 5.16.

* gnu/packages/bioinformatics.scm (diamond): Update to 0.8.38.

gnu/packages/upnp.scm (miniupnpc)[description]: Use @dfn.

gnu/packages/upnp.scm (miniupnpc): Update to 2.0.20170421.

* gnu/packages/suckless.scm (fortify-headers)[description]: Use @code.

* gnu/packages/suckless.scm (spoon, xbattmon, wificurse, skroll, sbm)
(prout, noice, fortify-headers, colors)[source, home-page]: Use HTTPS.
(human)[home-page]: Likewise.
* gnu/packages/version-control.scm (stagit)[source, home-page]: Likewise.

* gnu/packages/version-control.scm (git)[home-page]: Use HTTPS.
(cvs)[source, home-page]: Likewise.

* gnu/packages/version-control.scm (git-crypt)[description]: Use two spaces
where one would suffice.

* gnu/packages/version-control.scm (diffstat)[synopsis, description]:
Use @command.

* gnu/packages/version-control.scm (diffstat): Update to 1.61.
[source]: Add http://invisible-mirror.net mirror.

* gnu/packages/version-control.scm (neon)[description]: Use @enumerate.

* gnu/packages/version-control.scm (neon): Update to 0.30.2.

* gnu/packages/version-control.scm (cgit): Update to 1.1.
(git@2.9): Rename to...
(git@2.10): ... this.  Update to 2.10.
(cgit)[inputs]: Replace git@2.9 with git@2.10.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

* gnu/packages/tmux.scm (tmux): Update to 2.4.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

Fixes <http://bugs.gnu.org/26166>.

* gnu/packages/rust.scm (cargo)
[arguments]<:modules>: Add (srfi srfi-1).
[arguments]<:phases>: Adapt 'unpack-submodule-sources' phase to more clearly
seperate the tasks it does.  Add helper procedures 'unpack', 'touch',
'install-rust-library'.
[arguments]<:phases>: Rename 'set-cargo-home' to 'set-environment-up' and
make it use official cargo directories.
[arguments]<:phases>: Remove 'configure' phase.

* gnu/packages/gnuzilla.scm (icecat): Update to 52.0.2-gnu1.
[source]: Remove all patches except "icecat-avoid-bundled-libraries.patch".
Add selected fixes from the upstream mozilla-esr52 repository, up to 52.1.
Remove "dom/devicestorage" in the snippet.
[inputs]: Remove gstreamer and gst-plugins-base.  Add ffmpeg and gtk+3.  Move
yasm to native-inputs.
[native-inputs]: Add autoconf-2.13 and yasm.
[arguments]: In configure-flags, remove the following switches which are no
longer accepted: --enable-{pango,svg,canvas,mathml,gstreamer=1.0} and
"--disable-gnomevfs".  Use "--enable-default-toolkit=cairo-gtk3" to switch to
Gtk+3.  Remove the 'remove-h264parse-from-blacklist' phase.  Adapt the
'arrange-to-link-libxul-with-libraries-it-might-dlopen' phase as needed.  In
the 'configure' phase, set the AUTOCONF environment variable.
(mozilla-patch): Update the URL pattern to fetch from the mozilla-esr52
repository.
* gnu/packages/patches/icecat-avoid-bundled-libraries.patch: Adapt to mozilla-esr52.
* gnu/packages/patches/icecat-binutils.patch: Remove file.
* gnu/packages/patches/icecat-bug-1299500-pt10.patch: New file.
* gnu/local.mk (dist_patch_DATA): Remove "icecat-binutils.patch".
Add "icecat-bug-1299500-pt10.patch".

* gnu/packages/autotools.scm (autoconf-2.13): New variable.

Suggested by Marius Bakke <mbakke@fastmail.com> in
<https://lists.gnu.org/archive/html/guix-devel/2017-04/msg00440.html>.

* gnu/packages/patches/nss-disable-long-b64-tests.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/gnuzilla.scm (nss)[source]: Add patch.

* gnu/packages/gnuzilla.scm (nss): Update to 3.30.2.

* gnu/packages/fontutils.scm (graphite2)[replacement]: New field.
(graphite2/fixed): New variable.
* gnu/packages/patches/graphite2-CVE-2017-5436.patch,
gnu/packages/patches/graphite2-check-code-point-limit.patch,
gnu/packages/patches/graphite2-fix-32-bit-wrap-arounds.patch,
gnu/packages/patches/graphite2-non-linear-classes-even-number.patch:
New files.
* gnu/local.mk (dist_patch_DATA): Add them.

* gnu/packages/patches/hypre-doc-tables.patch,
gnu/packages/patches/hypre-ldflags.patch: Delete.
* gnu/local.mk (dist_patch_DATA): Remove them.

On Guile 2.2.1, this yields a 5% speedup on:

  guix build libreoffice xmonad certbot -n --no-substitutes --no-build-hook

* guix/derivations.scm (derivation->string): Rename to...
(derivation->bytevector): ... this.  Use 'open-bytevector-output-port'
instead of 'call-with-output-string'.
(derivation-hash): Remove string-to-bytevector conversion before
'sha256' call.
(build-expression->derivation): Use 'add-data-to-store' and an
bytevector port instead of a string port for the expression.

Some early 64-bit AMD processors do not support this instruction set.

* gnu/packages/patches/ceph-disable-cpu-optimizations.patch: Disable SSE3.

* gnu/packages/certs.scm (nss-certs): Update to 3.30.2.

This is a followup to 1d8e7273.

* gnu/packages/gstreamer.scm (gst-plugins-base): Remove dead comment.

Fixes CVE-2017-{5857,5973,5987,6058,6505,7377,7471,7718}.

* gnu/packages/qemu.scm (qemu): Update to 2.9.0.
[source]: Remove obsolete patches.
* gnu/packages/patches/qemu-CVE-2016-10155.patch,
gnu/packages/patches/qemu-CVE-2017-5525.patch,
gnu/packages/patches/qemu-CVE-2017-5526.patch,
gnu/packages/patches/qemu-CVE-2017-5552.patch,
gnu/packages/patches/qemu-CVE-2017-5578.patch,
gnu/packages/patches/qemu-CVE-2017-5579.patch,
gnu/packages/patches/qemu-CVE-2017-5856.patch,
gnu/packages/patches/qemu-CVE-2017-5898.patch: Delete files.
* gnu/local.mk (dist_patch_DATA): Remove them.

* gnu/packages/games.scm (tuxpaint)[arguments]<#:parallel-build?>: New parameter.