Security updates for Friday

Security updates have been issued by Arch Linux (systemd and wireshark-cli), Debian (libsndfile and tmpreaper), Fedora (beep, electrum, gnutls, haproxy, krb5, mupdf, php-horde-Horde-Image, python-django, and wget), Mageia (libarchive and terminology), openSUSE (libraw, polkit, and singularity), SUSE (haproxy, java-1_8_0-openjdk, LibVNCServer, and webkit2gtk3), and Ubuntu (exiv2, gnupg2, and webkit2gtk).