gnu: rcs: Fix build against gcc-5.4.0.

* gnu/local.mk (dist_patch_DATA): Add patch.
* gnu/packages/patches/rcs-5.9.4-noreturn.patch: New file.
* gnu/packages/version-control.scm (rcs)[source]: Applied patch.

Signed-off-by: Marius Bakke <mbakke@fastmail.com>

Merge remote-tracking branch 'origin/master' into core-updates

gnu: Adjust asciidoc-related build options.

Commits 9099a45792306fade2d9ca55138e49ef4f01f1ea and
3078821d1380c26c738be6b5d430c595327d401f make many package inputs and
build configurations related to asciidoc obsolete.

* gnu/packages/compton.scm (compton)[inputs]: Remove docbook-xml,
libxml2 and libxslt.
* gnu/packages/mail.scm (offlinemap)[native-inputs]: Remove libxslt.
* gnu/packages/linux.scm (btrfs-progs)[native-inputs]: Remove docbook-xml.
(perf)[inputs]: Remove docbook-xml and libxslt.
* gnu/packages/text-editors.scm (kakoune)[native-inputs]: Remove libxslt.
* gnu/packages/version-control.scm (cgit)[native-inputs]: Remove
docbook-xml, docbook-xsl, libxml2 and libxslt.
(cvs-fast-export)[native-inputs]: Remove docbook-xml, docbook-xsl,
libxml2 and libxslt.
* gnu/packages/web.scm (qutebrowser)[native-inputs]: Remove docbook-xml,
docbook-xsl, libxml2, and libxslt.
(tinyproxy)[native-inputs]: Remove docbook-xml, docbook-xsl, libxml2 and
libxslt.
* gnu/packages/wm.scm (awesome)[make-flags]: Remove XML_CATALOG_FILES flag.
(i3-wm)[inputs]: Remove docbook-xml.
[native-inputs]: Add libxml2.

gnu: git: Update to 2.12.1.

* gnu/packages/version-control.scm (git): Update to 2.12.1.

Merge branch 'master' into core-updates

Revert "gnu: gitolite: Fix shebangs in hooks."

This change embedded store references in the shebangs of scripts that
were meant to be copied out of the store. Those scripts would break when
the interpreters expected by the shebangs were garbage collected.

<https://debbugs.gnu.org/cgi/bugreport.cgi?bug=25966#28>

This reverts commit d0c16adb190c7244ee3ef1329cba78a015ae5d10.

Merge branch 'master' into core-updates

gnu: git: force GIT_EXEC_PATH to be single-entry

* gnu/packages/version-control.scm (git)[native-search-paths](separator):
New field.

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

gnu: gitolite: Fix shebangs in hooks.

Fixes <https://bugs.gnu.org/25957>.

* gnu/packages/version-control.scm (gitolite)[arguments]: Add 'fix-hooks-shebangs'
phase to fix references to '/usr/bin/perl'.

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

gnu: gitolite: Update to 3.6.6.

* gnu/packages/version-control.scm (gitolite): Update to 3.6.6.

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

Merge branch 'python-tests'

Merge branch 'master' into python-tests

gnu: git: Update to 2.12.0.

* gnu/packages/version-control.scm (git): Update to 2.12.0.

Merge remote-tracking branch 'origin/master' into core-updates

Merge branch 'master' into python-tests

gnu: libgit2: Propagate openssl and zlib.

* gnu/packages/version-control.scm (libgit2)[inputs]: Move OPENSSL
to...
[propagated-inputs]: ... here.  New field.

Merge branch 'master' into core-updates

gnu: git: Add GIT_EXEC_PATH search-path-specification.

Enables git plugins to be found when in they're in the system profile.

* gnu/packages/version-control.scm (git)[native-search-paths]: Add
  GIT_EXEC_PATH.  Remove git wrapper and outdated comment.

gnu: Add git-crypt.

* gnu/packages/version-control.scm (git-crypt): New variable.

gnu: git: Update to 2.11.1.

* gnu/packages/version-control.scm (git): Update to 2.11.1.