Release of ALPHA3

This release contains the promised features and changes mentioned in the release preview. If you want to be able to send and receive emails, you MUST have an smtp server you can use to send mails. I have fully removed the dirty sendmail hack by fully functional smtp sending routines. To realize mail sending without delay I let the mail sending routines use yet another thread.

Another thing now working is the validate routines, it means that a user must first enter an activation code before they can start using their nick.

Also there are some bugfixes, concerning stability and usability .. with this release we're nearing the Beta release.

Here I also want to thank Rocko again, he took much time debugging together with me.