mail/ovs: update to 1.06

Changelog: https://github.com/xbeaudouin/openvisp/blob/master/stats/trunk/CHANGES

Update WWW and UPSTREAM since both websites disapear,
we now point to the original author github repo, when
latest version of the code source was archived 12 years
ago.

Also perform some reformat of the port to make porlint,
portclippy and portfmt happy.