[IRCServices] Feature request about nickname links and a sort of bug report

[Milko Krachounov]

I just noticed an error in my own source... If ngi->email and
target_ngi->email are the same the link should be allowed (as there is no
way for the nicknames with target_ngi's email to exceed the NSRegEmailMax
after the link, and if they do this would be a bug...).. So if the two
emails are the same either the link should be allowed, OR the >= should be
replaced with > and a BUG to be logged...