Security updates for Thursday

Security updates have been issued by Arch Linux (apache, evolution, gnutls, and thunderbird), Debian (wpa), Gentoo (git), Mageia (dovecot, flash-player-plugin, gpac, gpsd, imagemagick, koji, libssh2, libvirt, mariadb, ming, mumble, ntp, python, python3, squirrelmail, and wget), openSUSE (apache2), Red Hat (httpd24-httpd and httpd24-mod_auth_mellon), SUSE (libqt5-qtbase, openldap2, tar, and xmltooling), and Ubuntu (ruby1.9.1, ruby2.0, ruby2.3, ruby2.5 and wpa).