gexp: Remove outdated comment.

* guix/gexp.scm (lower-references): Remove outdated "XXX" comment.

gnu: geoclue: Update to 2.4.4.

* gnu/packages/gnome.scm (geoclue): Update to 2.4.4.

gnu: c-reduce: Upgrade to 2.5.0.

* gnu/packages/debug.scm (c-reduce): Upgrade to 2.5.0.
[inputs]: Remove delta and perl-benchmark-timer.  Add perl-term-readkey.
[arguments]: Adjust wrapper libraries.

gnu: llvm: Build shared libraries.

* gnu/packages/llvm.scm (llvm)[arguments]: Add -DBUILD_SHARED_LIBS to

gnu: llvm: propagate zlib input.

* gnu/packages/llvm.scm (llvm)[inputs]: Move zlib from here...
[ppropagated]: ...to here.

gnu: Fix wrong import of '(gnu packages zsh)'.

* gnu/packages/crypot.scm: Change import of '(gnu packages zsh)'
to '(gnu packages shells)'.

gnu: guile: Search for .go files in "/site-ccache", not "/ccache".

* gnu/packages/guile.scm (guile-next)[search-paths]: Change "2.2/ccache"
to "2.2/site-ccache".
(guile-for-guile-emacs)[search-paths]: Likewise.

gnu: ardour: Do not contact ardour.org on start.

* gnu/packages/audio.scm (ardour)[arguments]: Add configure flag
"--no-phone-home".

gnu: Add Tomb.

* gnu/packages/crypto.scm (tomb): New variable.

gnu: Add Swish-e.

* gnu/packages/search.scm (swish-e): New variable.
* gnu/packages/patches/swish-e-search.patch,
gnu/packages/patches/swish-e-format-security.patch: New patches.
* gnu/local.mk (dist_patch_DATA): Add them.

gnu: Add steghide.

* gnu/packages/image.scm (steghide): New variable.
* gnu/packages/patches/steghide-fixes.patch: New patch.
* gnu/local.mk (dist_patch_DATA): Add it.

gnu: Add mlocate.

* gnu/packages/search.scm (mlocate): New variable.

gnu: file-roller: Update to 3.20.3 [fixes CVE-2016-7162].

* gnu/packages/gnome.scm (file-roller): Update to 3.20.3.

gnu: ardour: Update to 5.3.

* gnu/packages/audio.scm (ardour): Update to 5.3.

gnu: Add libhdate.

* gnu/packages/calendar.scm (libhdate): New variable.

gnu: kmscon: Enable elogind support.

* gnu/packages/terminals.scm (kmscon)[source]: Add 'modules' and
'snippet'.

gnu: kmscon: Build the man page.

* gnu/packages/terminals.scm (kmscon)[native-inputs]: Add LIBXSLT,
LIBXML2, and DOCBOOK-XSL.

gnu: kmscon: Clarify synopsis, description, and supported systems.

* gnu/packages/terminals.scm (kmscon)[synopsis, description]: Clarify.
[supported-systems]: New field.

gnu: Add python-git-review.

* gnu/packages/openstack.scm (python-git-review)
(python2-git-review): New variables.

Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

gnu: Add surfraw.

* gnu/packages/web.scm (surfraw): New variable.

Signed-off-by: Efraim Flashner <efraim@flashner.co.il>