gnu: Remove references to deleted patches.

This is a followup to commit e074a655dd6497daafbd62737e3b63f3d5aa7985.

* gnu/local.mk (dist_patch_DATA): Remove ninja-zero-mtime.patch and
node-test-http2-server-rst-stream.patch, which no longer exist.

Merge branch 'master' into core-updates

gnu: libexif: Fix CVE-2016-6328.

* gnu/packages/patches/libexif-CVE-2016-6328.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/photo.scm (libexif)[source]: Use it.

gnu: perl-lingua-pt-stemmer: Update URL.

* gnu/packages/language.scm (perl-lingua-pt-stemmer)[source]: Use new
upstream URL.

Signed-off-by: Leo Famulari <leo@famulari.name>

gnu: escpr: Update to 1.6.18.

* gnu/packages/cups.scm (escpr): Update to 1.6.18.

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

gnu: Add Motion.

* gnu/packages/video.scm (motion): New variable.

packages: 'package-mapping' maps replacement.

* guix/packages.scm (package-mapping): Apply PROC to 'replacement' as well.

build: Declare “doc/guix.texi“ dependencies.

Fixes <https://bugs.gnu.org/29727>.

* doc/local.mk (%C%_guix_TEXINFOS): New variable containing files included by
“doc/guix.texi”.
(EXTRA_DIST): Remove ‘.texi’ files.

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

gnu: certbot: Update to 0.21.0.

* gnu/packages/tls.scm (certbot): Update to 0.21.0.
(python-acme): Update to 0.21.0.
[propagated-inputs]: Add python-josepy.

gnu: Add python-josepy.

* gnu/packages/python-crypto.scm (python-josepy, python2-josepy): New variables.

gnu: libvirt: Update to 4.0.0.

* gnu/packages/virtualization.scm (libvirt): Update to 4.0.0.
[arguments]: Substitute INVOKE for SYSTEM*.

gnu: Consistently Write ‘file system(s)’.

It is the GNU way.

* doc/guix.texi (Build Systems, DNS Services): Write ‘file system(s)’.
* gnu/build/vm.scm (create-ext-file-system, create-fat-file-system):
Likewise.
* gnu/packages/backup.scm (dirvish, rsnapshot)[description]: Likewise.
* gnu/packages/check.scm (python-testpath)[description]: Likewise.
* gnu/packages/disk.scm (pydf)[description]: Likewise.
* gnu/packages/file-systems.scm (disorderfs)[synopsis, description]: Likewise.
(glusterfs)[description]: Likewise.
* gnu/packages/haskell.scm (ghc-directory, ghc-system-fileio-bootstrap)
(ghc-system-fileio)[synopsis]: Likewise.
(ghc-fsnotify)[description]: Likewise.
* gnu/packages/linux.scm (proot)[description]: Likewise.
(jmtpfs)[synopsis, description]: Likewise.
* gnu/packages/mate.scm (caja, caja-extensions)[description]: Likewise.
* gnu/packages/storage.scm (ceph)[description]: Likewise.
* gnu/packages/sync.scm (lsyncd)[description]: Likewise.
* gnu/packages/syncthing.scm (syncthing)[synopsis]: Likewise.
(go-github-com-zillode-notify)[description]: Likewise.
* gnu/services/nfs.scm (pipefs-service-type): Likewise.
* guix/scripts/system.scm (perform-action): Likewise.

gnu: unbound: Update to 1.6.8 [fixes CVE-2017-15105].

* gnu/packages/dns.scm (unbound): Update to 1.6.8.

gnu: libvpx: Use HTTPS for home page.

* gnu/packages/video.scm (libvpx)[home-page]: Use HTTPS.

gnu: ninja: Update to 1.8.2.

* gnu/packages/ninja.scm (ninja): Update to 1.8.2.
[source]: Remove upstreamed patch.
[arguments]: Substitute INVOKE for SYSTEM*.  Use standard indentation.
* gnu/packages/patches/ninja-zero-mtime.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Remove it.

gnu: tcc: Update to 0.9.27.

* gnu/packages/c.scm (tcc): Update to 0.9.27.
[license]: Add a comment about attempted Expat re-licencing.

gnu: minixml: Update to 2.11.

* gnu/packages/xml.scm (minixml): Update to 2.11.
[source]: Use URL-FETCH/TARBOMB method.
[arguments]: Add ‘fix-permissions’ phase.

gnu: libebml: Update to 1.3.5.

* gnu/packages/xml.scm (libebml): Update to 1.3.5.
[source, home-page]: Update URI.

gnu: wine: Parameterize version string in uri.

* gnu/packages/wine.scm (wine)[source]: Replace hard-coded version
string with parameterized version.

gnu: xpra: Update to 2.2.3.

* gnu/packages/xorg.scm (xpra): Update to 2.2.3.