Revert "gnu: python-matplotlib: Remove python-pillow input."

python-pillow is now fixed, so we can add it back.
This reverts commit dfbc33dceb803a3d54840613b08dc98f7be75f60.

gnu: openjpeg: Upgrade to 2.1.0.

* gnu/packages/image.scm (openjpeg): Upgrade to 2.1.0.
  (openjpeg-2.0): New variable.
* gnu/packages/pdf.scm (mupdf)[inputs]: Use openjpeg-2.0.

gnu: Add hdparm.

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

gnu: libvpx: Apply bug fixes.

Fixes build on armhf.

* gnu/packages/patches/libvpx-fix-armhf-link.patch,
  gnu/packages/patches/libvpx-fix-ssse3-quantize.patch,
  gnu/packages/patches/libvpx-vp9-out-of-bounds-access.patch: New files.
* gnu-system.am (dist_patch_DATA): Add them.
* gnu/packages/video.scm (libvpx): Add patches.  On armhf, add additional
  configure flags to avoid requiring support for NEON.

gnu: Add polipo.

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

gnu: Add dnsmasq.

* gnu-system.am (GNU_SYSTEM_MODULES): Add dnsmasq.scm.
* gnu/packages/dnsmasq.scm: New file.

gnu: gdk-pixbuf: Enable Xlib rendering support.

* gnu/packages/gtk.scm (gdk-pixbuf)[arguments]: New field.
  [inputs]: Add LIBX11.

gnu: icecat: Use system libvpx, icu4c, and pixman libraries.

* gnu/packages/gnuzilla.scm (icecat)[inputs]: Add libvpx, icu4c, pixman.
  [arguments]: Add --with-system-libvpx, --with-system-icu, and
  --enable-system-pixman configure flags.  Add comments about why we
  cannot (yet) add system cairo and sqlite, etc.

gnu: libxtst: Propagate libxi.

* gnu/packages/xorg.scm (libxtst): Move libxi to 'propagated-inputs'.

gnu: icecat: Use gstreamer-1.0 and enable webrtc.

* gnu/packages/gnuzilla.scm (icecat)[inputs]: Use latest gstreamer and
  gst-plugins-base.
  [arguments]: Remove "--disable-webrtc" and add "--enable-gstreamer=1.0" to
  configure flags.

gnu: linux-libre: Update to 3.18.5

* gnu/packages/linux.scm (linux-libre): Update to version 3.18.5.

gnu: Add jansson.

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

gnu: icecat: Update to 31.4.0.

* gnu/packages/patches/icecat-CVE-2014-1587-bug-1042567.patch,
  gnu/packages/patches/icecat-CVE-2014-1587-bug-1072847.patch,
  gnu/packages/patches/icecat-CVE-2014-1587-bug-1079729.patch,
  gnu/packages/patches/icecat-CVE-2014-1587-bug-1080312.patch,
  gnu/packages/patches/icecat-CVE-2014-1587-bug-1089207.patch,
  gnu/packages/patches/icecat-CVE-2014-1590.patch,
  gnu/packages/patches/icecat-CVE-2014-1592.patch,
  gnu/packages/patches/icecat-CVE-2014-1593.patch,
  gnu/packages/patches/icecat-CVE-2014-1594.patch,
  gnu/packages/patches/icecat-CVE-2014-8634-pt1.patch,
  gnu/packages/patches/icecat-CVE-2014-8634-pt2.patch,
  gnu/packages/patches/icecat-CVE-2014-8638-pt1.patch,
  gnu/packages/patches/icecat-CVE-2014-8638-pt2.patch,
  gnu/packages/patches/icecat-CVE-2014-8639.patch,
  gnu/packages/patches/icecat-CVE-2014-8641.patch,
  gnu/packages/patches/icecat-armhf-xpcom.patch: Remove files.
* gnu-system.am (dist_patch_DATA): Remove them.
* gnu/packages/gnuzilla.scm: Update to 31.4.0.  Remove patches.

gnu: Add desktop-file-utils.

* gnu/packages/gnome.scm (desktop-file-utils): New variable.

gnu: bowtie: fix build errors

* gnu/packages/bioinformatics.scm (bowtie): Add 'supported-systems' field and
  add Makefile patch.
* gnu/packages/patches/bowtie-fix-makefile.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.

gnu: jack-1: Fix licenses.

* gnu/packages/audio.scm (jack-1): Change license field to a list of licenses
  instead of a list of symbols.

gnu: Add Threading Building Blocks.

* gnu/packages/tbb.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.

gnu: Add IcedTea 6

* gnu/packages/java.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.

Merge branch '0.8.1-release'

gnu: guix: Update snapshot.

* gnu/packages/package-management.scm (guix-devel): Update snapshot.
  (guix): Change to GUIX-DEVEL.