Also tidy up a few items in the port recommended by josh4trunks.
This includes improving rc script to minimise customisation (maximise
use of rc.subr), moving the storage of the MediaBrowser database files
to /var/db/mediabrowser and adding some more comments for users.
Add an entry to UPDATING explaining the database directory move from
/usr/local/mediabrowser to /var/db/mediabrowser.
The default MediaBrowser database/configuration/logs/media metadata
storage directory has moved from /usr/local/mediabrowser to
/var/db/mediabrowser. Users are advised either to move the contents of
the old directory to the new location, or to add a mediabrowser_data_dir
entry to /etc/rc.conf.
PR: 194904
Submitted by: Ben Woods
1b66c5077e