Log Message:
Update darkstat to 3.0.619.
Patch provided by MAINTAINER, Bartosz Kuzma in PR 36250.

Changes from 3.0.540 to 3.0.619:
 - Decode DLT_PPP and DLT_PPP_SERIAL on NetBSD,
   patch courtesy of Bartosz Kuzma.
 - Don't use pcap_setnonblock(), with help from Colin Phipps.
 - Reduce the number of syscalls made.
 - Answer FAQ about graph axes / labels / scale.
 - Fix build on OpenBSD (thanks Chris!) and Solaris.
 - Commandline arg (-n) to disable promiscuous mode when
   sniffing, thanks to Chris Kuethe for the implementation.
 - Commandline arg (-r) to disable DNS resolver.
 - Track and report per-host last seen MAC address.
 - Move FAQ into manpage.
 - Implement display of start time and running time.
 - Web: implement sorting the hosts table by in/out/total.
 - Web: implement paging through the hosts table.
 - Web: implement full view of hosts table.
 - Don't die if the capture interface loses its IP address.
 - Make daemonize (previously -d) the default, and make -D the
   argument to suppress it.
 - Commandline arg (-l) to graph traffic entering/leaving the
   local network as opposed to just the local IP.  v2 had this.
 - Allow configure-time override of CHROOT_DIR and PRIVDROP_USER.
 - Web: new color scheme.