gnu: c-reduce: Update to 2.3.0.

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

gnu: glib-networking: Use '/etc/ssl/certs/ca-certificates.crt' as TLS CA file.

* 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: webkitgtk: Update to 2.8.5.

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

gnu: webkitgtk/gtk+-2: Change name field to "webkitgtk-gtk2".

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

gnu: Add wesnoth.

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

gnu: Add rfkill.

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

gnu: icecat: Add fixes for CVE-2015-{4473,4482,4488,4489,4491,4492}.

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: linux-libre: Update to 4.1.5.

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

gnu: sipwitch: Update to 1.9.9.

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

gnu: ucommon: Update to 6.5.1.

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

gnu: openssh: Update to 7.0p1.

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

gnu: ratpoison: Update to 1.4.8.

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

gnu: avidemux: Update to 2.6.10. Disable GTK+ build.

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

gnu: wicd: Fix bugs in curses interface program.

* 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: gnupg: Update to 2.1.7.

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

Add new entries to .mailmap.

* .mailmap: Add new lines for Andy Wingo and Eric Dvorsak.

gnu: calibre: Update to 2.34.0.

* gnu/packages/ebook.scm (calibre): Update to 2.34.0.

gnu: python-sip, python-pyqt: Fix computation of python library path.

* gnu/packages/qt.scm (python-sip, python2-sip, python-pyqt, python2-pyqt,
    python-pyqt-4, python2-pyqt-4)[arguments]: Fix computation of python
    library path for multi-digit python versions.

tests: containers: Skip if setgroups file does not exist.

Fixes bug #21226.

Linux 3.19 introduced a fix for a security vulnerability in user namespaces.
This fix introduced a new proc file called 'setgroups' and was backported to
many older kernels.  However, some users run a kernel that is new enough to
support user namespaces yet old enough to not include the patch, so we must
skip the tests.

* tests/containers.scm: Skip all tests if /proc/self/setgroups does not exist.

gnu: Add epiphany.

* gnu/packages/gnome.scm (epiphany): New variable.