Convert a domain name basename (e.g.

Convert a Namecoin domain name key name (e.g.

Takes a name in the form "d/example" or "example.bit" and converts it to the bareword "example".

For domains of the form "Y1.Y2...Yn.ANCHOR.X1.X2...Xn.", returns the following values: basename is the name appearing directly beneath the anchor (Yn).

Split a domain name a.b.c.d.e into parts e (the head) and a.b.c.d (the rest).

Split a domain name a.b.c.d.e into parts a (the tail) and b.c.d.e (the rest).