#2 accept array of nicknames in login() and use them in _nickna

[Ronald Hummelink]

accept array of nicknames in login() and use them in
_nicknameinuse()

> Next feature: login() now accepts a string or an
array so it is backward> compatible. _nicknameinuse()
will now search the array for the next nick> before it
falls back to old behaviour.> Unfortunately cannot
really check back and use earlier nicks in the> array
because i do not know how to verify before sending NICK
to the> server wether a nick is in use. (blindly
starting at first nick in the> array will potentially
create infinite loop)> > Diffed on top of my last
patch, but should apply with only offset to

[Ronald Hummelink]