gnu: Add optipng.

* gnu/packages/image.scm (optipng): New variable.

Signed-off-by: Kei Kebreau <kei@openmailbox.org>

gnu: extempore: Only build on x86_64.

* gnu/packages/algebra.scm (kiss-fft-for-extempore)[supported-systems]:
Only build on x86_64.
* gnu/packages/gl.scm (nanovg-for-extempore)[supported-systems]:
Likewise.
* gnu/packages/image.scm (stb-image-for-extempore)[supported-systems]:
Likewise.
* gnu/packages/llvm.scm (llvm-for-extempore)[supported-systems]:
Likewise.
* gnu/packages/music.scm (portmidi-for-extempore)[supported-systems]:
Likewise.
(extempore)[supported-systems]: Likewise.

gnu: Add stb-image-for-extempore.

* gnu/packages/image.scm (stb-image-for-extempore): New variable.

gnu: zimg: Update to 2.2.1.

* gnu/packages/image.scm (zimg): Update to 2.2.1.

gnu: jbig2dec: Update to 0.13.

* gnu/packages/image.scm (jbig2dec): Update to 0.13.
[source]: Update URL.
[home-page]: Update URL.
* gnu/packages/patches/jbig2dec-ignore-testtest.patch: Adjust patch.

gnu: jpegoptim: Update to 1.4.4.

* gnu/packages/image.scm (jpegoptim): Update to 1.4.4.

gnu: Remove openjpeg-2.0.

* gnu/packages/image.scm (openjpeg-2.0): Remove variable.

gnu: openjpeg: Fix CVE-2016-5157.

* gnu/packages/patches/openjpeg-CVE-2016-5157.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/image.scm (openjpeg): Use it.

gnu: openjpeg-2.*: Fix CVE-2016-7163.

* gnu/packages/patches/openjpeg-CVE-2016-7163.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/image.scm (openjpeg, openjpeg-2.0): Use it.

gnu: openjpeg: Update to 2.1.1.

* gnu/packages/image.scm (openjpeg): Update to 2.1.1.
[source]: Use GitHub URL and add file-name field. Remove
"openjpeg-use-after-free-fix.patch" and "openjpeg-CVE-2015-6581.patch" from
patches.

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 libicns.

* gnu/packages/image.scm (libicns): New variable.

Signed-off-by: David Craven <david@craven.ch>

gnu: libtiff: Fix CVE-2016-5314.

* gnu/packages/patches/libtiff-CVE-2016-5314.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/image.scm (libtiff/fixed): Use it.

gnu: libtiff: Fix CVE-2016-{3623,3945,3990,3991,5321,5323}.

* gnu/packages/image.scm (libtiff)[replacement]: New field.
(libtiff/fixed): New variable.
* gnu/packages/patches/libtiff-CVE-2016-3623.patch,
gnu/packages/patches/libtiff-CVE-2016-3945.patch,
gnu/packages/patches/libtiff-CVE-2016-3990.patch,
gnu/packages/patches/libtiff-CVE-2016-3991.patch,
gnu/packages/patches/libtiff-CVE-2016-5321.patch,
gnu/packages/patches/libtiff-CVE-2016-5323.patch: New files.
* gnu/local.mk (dist_patch_DATA): Add them.

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

gnu: Add perceptualdiff.

* gnu/packages/image.scm (perceptualdiff): New variable.

Merge branch 'master' into core-updates

Resolved conflicts:
* gnu/packages/scheme.scm: Conflict in import of (guix licenses). On master,
"#:hide (openssl)" was used. On core-updates, "#:select (some licenses)" was
used. The latter won the conflict.
* gnu/packages/version-control.scm (git)[arguments]: Whitespace conflict
in 'install-shell-completion.

gnu: Update URLs for sourceforge.net.

* gnu/packages/audio.scm: Update URLs pointing to sourceforge.net.
* gnu/packages/fonts.scm: Likewise.
* gnu/packages/gl.scm: Likewise.
* gnu/packages/gnome.scm: Likewise.
* gnu/packages/image.scm: Likewise.
* gnu/packages/lxde.scm: Likewise.
* gnu/packages/slim.scm: Likewise.
* gnu/packages/textutils.scm: Likewise.

gnu: Update URLs for sourceforge.net.

* gnu/packages/admin.scm: Update URLs pointing to sourceforge.net.
* gnu/packages/audacity.scm: Likewise.
* gnu/packages/audio.scm: Likewise.
* gnu/packages/bioinformatics.scm: Likewise.
* gnu/packages/boost.scm: Likewise.
* gnu/packages/cdrom.scm: Likewise.
* gnu/packages/code.scm: Likewise.
* gnu/packages/compression.scm: Likewise.
* gnu/packages/cups.scm: Likewise.
* gnu/packages/djvu.scm: Likewise.
* gnu/packages/docbook.scm: Likewise.
* gnu/packages/documentation.scm: Likewise.
* gnu/packages/flashing-tools.scm: Likewise.
* gnu/packages/fonts.scm: Likewise.
* gnu/packages/fontutils.scm: Likewise.
* gnu/packages/games.scm: Likewise.
* gnu/packages/ghostscript.scm: Likewise.
* gnu/packages/gl.scm: Likewise.
* gnu/packages/gnucash.scm: Likewise.
* gnu/packages/graphviz.scm: Likewise.
* gnu/packages/image.scm: Likewise.
* gnu/packages/libreoffice.scm: Likewise.
* gnu/packages/libusb.scm: Likewise.
* gnu/packages/linux.scm: Likewise.
* gnu/packages/lirc.scm: Likewise.
* gnu/packages/maths.scm: Likewise.
* gnu/packages/mcrypt.scm: Likewise.
* gnu/packages/mp3.scm: Likewise.
* gnu/packages/music.scm: Likewise.
* gnu/packages/networking.scm: Likewise.
* gnu/packages/onc-rpc.scm: Likewise.
* gnu/packages/password-utils.scm: Likewise.
* gnu/packages/pdf.scm: Likewise.
* gnu/packages/perl.scm: Likewise.
* gnu/packages/photo.scm: Likewise.
* gnu/packages/popt.scm: Likewise.
* gnu/packages/python.scm: Likewise.
* gnu/packages/rdesktop.scm: Likewise.
* gnu/packages/screen.scm: Likewise.
* gnu/packages/swig.scm: Likewise.
* gnu/packages/tcl.scm: Likewise.
* gnu/packages/version-control.scm: Likewise.
* gnu/packages/video.scm: Likewise.
* gnu/packages/w3m.scm: Likewise.
* gnu/packages/web.scm: Likewise.
* gnu/packages/wm.scm: Likewise.
* gnu/packages/xdisorg.scm: Likewise.
* gnu/packages/xml.scm: Likewise.

Merge branch 'master' into core-updates