Multitail contribution

Updating the multitail tool to V7 in FreeBSD.

With this contribution, the multitail tool got updated to V7 in FreeBSD, and we’ve also added our UWSGI syntax to the defaults.

https://github.com/folkertvanheusden/multitail/pull/40

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280755