#34 Nick change on start

[virtualj]

If the nick setted in config is not accepted by server on
startup (nick name alredy in use) we are prompted for
new nick. If we choose a nick of more than char of
server nicklength limit wlirc use the long nick and not
the short (REAL) nick and also other change of nick
doens't change the nick variable of wlirc (that is show
on each my messages).