* gnu/packages/ebook.scm (calibre): Update to 2.35.0.

On systems with a glibc prior to 2.14, the 'setns' function is not available.

Thanks to Eric Bavier for reporting the issue.

* guix/build/syscalls.scm (setns): Wrap with 'false-if-exception'.

* gnu/packages/statistics.scm (r)[native-search-paths]: Add
  specification for "R_LIBS_SITE" variable.

* gnu/packages/statistics.scm (r): Update to 3.2.2.

* gnu/packages/debug.scm (american-fuzzy-lop): New variable.

* gnu/packages/qemu.scm (qemu-headless)[arguments]: Honor #:configure-flags
  arguments for configure phase.

* gnu/packages/audio.scm (ardour): Update to 4.2.

* gnu/packages/mail.scm (notmuch): Update to 0.20.2.  Add python-sphinx native
  input.  Rewrite phases using 'modify-phases' syntax.

* gnu/packages/mail.scm (offlineimap): Update to 6.5.7.

* gnu/packages/audio.scm (guitarix): Update to 0.33.0.
  [native-inputs]: Add faust.

* gnu/packages/messaging.scm (znc): New variable.

* gnu/packages/video.scm (mplayer2): Removed variable.

* gnu/packages/gnome.scm (epiphany)[propagated-inputs]: New field.

* gnu/packages/algebra.scm (flint)[arguments]: Disable parallel tests,
  which makes the build pass on arm.

* gnu/packages/games.scm (gamine): New variable.

This is an improvement over commit af6100f5.

* gnu/packages/gnome.scm (glib-networking)[source](patches): New field.
  [arguments]: Pass '/etc/ssl/certs/ca-certificates.crt' to configure.
  Set 'SSL_CERT_FILE' to '/dev/null' in 'use-empty-ssl-cert-file' phase.
  (libsoup)[arguments]: Set 'SSL_CERT_FILE' to '/dev/null' in
  'pre-check' phase.
* gnu/packages/patches/glib-networking-ssl-cert-file.patch: New patch.
* gnu-system.am (dist_patch_DATA): Add it.

* gnu/packages/algebra.scm (flint): Update to 2.5.2.
* gnu/packages/patches/flint-ldconfig.patch: New file.
* gnu-system.am (dist_patch_DATA): Register the patch.

* gnu/packages/algebra.scm (flint)[arguments]: Rewrite the phases using
  the modify-phases syntax.

* gnu/packages/linux.scm (wireless-tools)[source]: Replace unneeded
  old snippet with a new one that removes non-free files.
  [arguments]: Use modify-phases.  Remove custom 'configure' phase.  Add
  make-flags.
  [license]: Change to (list gpl2 lgpl2.1+).

* gnu/packages/bioinformatics.scm (shogun): Move from here...
* gnu/packages/machine-learning.scm (shogun): ...to here.

* gnu/packages/guile.scm (guile-redis): New variable.

* gnu/packages/guile.scm (haunt): New variable.

This broke libsoup tests.

This reverts commit af6100f5.

* gnu/packages/fish.scm (fish): Update to 2.2.0.

* gnu/packages/calcurse.scm (calcurse): Update to 4.0.0.
  [arguments]: New field.

* gnu/packages/debug.scm (c-reduce): Update to 2.3.0.
  [inputs]: Use latest llvm and clang.

* gnu/packages/gnome.scm (glib-networking)[arguments]: Pass
  '--with-ca-certificates=/etc/ssl/certs/ca-certificates.crt' to configure.
  Add 'disable-failing-tls-tests' phase.

* gnu/packages/webkit.scm (webkitgtk): Update to 2.8.5.
  [arguments]: Add 'add-gst-plugins-base-include-path' phase.

* gnu/packages/webkit.scm (webkitgtk/gtk+-2)[name]: Change to
  "webkitgtk-gtk2".

* gnu/packages/games.scm (wesnoth): New variable.

* gnu/packages/linux.scm (rfkill): New variable.

WARNING: CVE-2015-4473 may not be fully addressed here, because I was unable
to backport some of the patches (for upstream bugs 1182711 and 1146213).  I
was also unable to backport CVE-2015-4484 (upstream bug 1171540) and
CVE-2015-4487 (upstream bug 1171603).  I was unable to find any commit in the
upstream repository that claims to address bug 1105914 (CVE-2015-4478).

* gnu/packages/patches/icecat-CVE-2015-4473-partial.patch,
  gnu/packages/patches/icecat-CVE-2015-4482.patch,
  gnu/packages/patches/icecat-CVE-2015-4488.patch,
  gnu/packages/patches/icecat-CVE-2015-4489.patch,
  gnu/packages/patches/icecat-CVE-2015-4491.patch,
  gnu/packages/patches/icecat-CVE-2015-4492.patch: New files.
* gnu-system.am (dist_patch_DATA): Add them.
* gnu/packages/gnuzilla.scm (icecat)[source]: Add patches.

* gnu/packages/linux.scm (linux-libre): Update to 4.1.5.

* gnu/packages/telephony.scm (sipwitch): Update to 1.9.9.

* gnu/packages/telephony.scm (ucommon): Update to 6.5.1.

* gnu/packages/ssh.scm (openssh): Update to 7.0p1.

* gnu/packages/ratpoison.scm (ratpoison): Update to 1.4.8.
* gnu/packages/patches/ratpoison-shell.patch: Adapt to it.

* gnu/packages/video.scm (avidemux): Update to 2.6.10. Disable the GTK+
  build, which fails, and remove the gtk+ input.

* gnu/packages/patches/wicd-bitrate-none-fix.patch,
  gnu/packages/patches/wicd-get-selected-profile-fix.patch: New files.
* gnu-system.am (dist_patch_DATA): Add them.
* gnu/packages/wicd.scm (wicd)[source]: Add patches.

* gnu/packages/gnupg.scm (gnupg): Update to 2.1.7.