that resolves to multiple IP addresses.

that uses it

precaution to prevent mistakes to lead to buffer overflows.

of typecasts all over

linked list for name resolved data, even on hosts/systems with only IPv4
stacks as this simplifies a lot of code.

status more obvious

started complaining since it won't be reached... So I removed the call to
abort() and just return -1 instead. abort() was wrong to call anyway since
this is a library!