- added predict.c, moving the routines from util.c

- added predict.c, moving the routines from util.c

- added iface_count() and iface_n_ip() routines so its easy to loop
over the local interface list

- made readsize a normal loadparm global

- check for null w in add_domain_entry()

- set the deathtime to time()-1 for doamin entries with servertype==0
This allows servers that are shutting down to be removed

- add the 0x1c name at startup if we are a WINS server. Previously we
added it only if we were a master

- loop over interfaces in add_my_domains(), so people don't have to
have a lmhosts file to get lp_workgroup() on all interfaces

- set add to True for find_workgroupstruct() in nmbsync, and check for
null return

- remove some ugly "errno = EBADF" bits. they just confused things.
(This used to be commit 88b191b48836eeb7937f25b37d0bdd4a2276e5a7)