gnu: Add lzlib.

* gnu/packages/compression.scm (lzlib): New public variable.

gnu: Add clzip.

* gnu/packages/compression.scm (clzip): New public variable.

gnu: Add lunzip.

* gnu/packages/compression.scm (lunzip): New public variable.

gnu: Add hungrycat.

* gnu/packages/admin.scm (hungrycat): New public variable.

gnu: zstd: Use default ‘check’ target.

* gnu/packages/compression.scm (zstd)[arguments]: Don't set #:test-target.

guix: Exclude broken symlinks from man files.

* guix/man-db.scm (man-files): Remove broken symlinks from list of man pages.

gnu: libgxps: Fix CVE-2017-11590.

* gnu/packages/patches/libgxps-CVE-2017-11590.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/gnome.scm (libgxps)[source]: Use it.

gnu: imagemagick: Update to 6.9.9-27.

* gnu/packages/imagemagick.scm (imagemagick): Update to 6.9.9-27.

gnu: gnupg: Update to 2.2.4.

* gnu/packages/gnupg.scm (gnupg): Update to 2.2.4.

gnu: weechat: Run tests.

* gnu/packages/irc.scm (weechat)[native-inputs]: Add cpputest.
[arguments]: Add ‘-DENABLE_TESTS=ON’ to #:configure-flags.  Add
‘disable-failing-tests’ phase to do just that.  Run the others.

gnu: zstd: Disable unrelated format support.

* gnu/packages/compression.scm (zstd)[arguments]: Add HAVE_LZMA=0 to

gnu: zstd: Update to 1.3.3.

* gnu/packages/compression.scm (zstd): Update to 1.3.3.

gnu: gnupg@2.0: Superseded by the latest GnuPG.

The 2.0 series of GnuPG will stop receiving upstream support on
2017-12-31. From the release announcement of GnuPG 2.2.0:

"This release marks the start of a new long term support series
to replace the 2.0.x series which will reach end-of-life on 2017-12-31."

https://lists.gnupg.org/pipermail/gnupg-announce/2017q3/000413.html

* gnu/packages/gnupg.scm (gnupg-2.0)[properties]: New field.

gnu: libxslt: Fix CVE-2017-5029 and re-apply the fix for CVE-2016-4738.

This is a followup to commit 2663c38826cd6c2ef0c5119f8072fac8e89b2e9b.

* gnu/packages/xml.scm (libxslt)[replacement]: New field.
(libxslt/fixed): New variable.
* gnu/packages/patches/libxslt-CVE-2017-5029.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.

gnu: libarchive: Fix CVE-2017-14502.

* gnu/packages/patches/libarchive-CVE-2017-14502.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/backup.scm (libarchive-3.3.2)[source]: Use it.

gnu: Add python-tempdir.

* gnu/packages/python.scm (python-tempdir, python2-tempdir): New
variables.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: libexif: Fix CVE-2017-7544.

* gnu/packages/patches/libexif-CVE-2017-7544.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/photo.scm (feh)[source]: Use it.

gnu: xboing: Fix CVE-2004-0149.

* gnu/packages/patches/xboing-CVE-2004-0149: New file.
* gnu/packages/games.scm (xboing)[source]: Add patch.
* gnu/local.mk (dist_patch_DATA): Register it.

gnu: mupdf: Update to 1.12.0 [fixes CVE-2017-15369].

* gnu/packages/pdf.scm (mupdf): Update to 1.12.0.
[source]: Remove obsolete patches.
[inputs]: Add freeglut.
* gnu/packages/patches/mupdf-CVE-2017-14685.patch,
gnu/packages/patches/mupdf-CVE-2017-14686.patch,
gnu/packages/patches/mupdf-CVE-2017-14687.patch,
gnu/packages/patches/mupdf-CVE-2017-15587.patch: Delete files.
* gnu/local.mk (dist_patch_DATA): Remove them.
* gnu/packages/patches/mupdf-build-with-openjpeg-2.1.patch: Update and
rename to...
* gnu/packages/patches/mupdf-build-with-latest-openjpeg.patch: ... new file.

gnu: weechat: Update to 2.0.1.

* gnu/packages/irc.scm (weechat): Update to 2.0.1.