Log Message:
Update darkstat to 3.0.708.
Based on MAINTAINER update request in  PR 38930.
While here, add DESTDIR support.

Changes since 3.0.707:
 - Implement limiting of number of ports tracked per host,
   configurable on the commandline (--ports-max)
 - Optionally don't track high ports (--highest-port)
   Thanks Dennis!
 - Fix rare use-after-free resulting from hosts table reduction.
 - Make hosts limit configurable (--hosts-max)
 - Option to read from capfile as alternative to live capture
   (really only useful for development, benchmarking)
 - Add the sniffed interface name to HTML reports.
   Thanks Chris!

 - pkgsrc - add rc.d script