Bug#927977: Split dc_other_hostnames when presenting them to the user in dpkg-reconfigure

[積丹尼 Dan Jacobson]

Or just add "any of" in
>> │ system. If this option is chosen, 'jidanni.org', 'localhost' and **ANY OF**
>> │ 'jidanni2.jidanni.org;jidanni5.jidanni.org;jidanni7.jidanni.org;jidanni8.jidanni.org' in From,
if semicolon is detected.