net/bind916 on non-NetBSD

[Jonathan Perkin <jperkin%joyent.com@localhost>]

The net/bind916 package has a huge number of patches, most of which seem 
to be taken from what I presume is the builtin version on NetBSD.  

Unfortunately it doesn't build anywhere else, due to this error and 
others:

  socket.c:5643:2: error: unknown type name 'isc__socketmgr_t'; did you mean 'isc_socketmgr_t'?

That is coming from patches/patch-lib_isc_unix_socket.c but there is no 
match for isc__socketmgr_t in all of the bind source.  I can only assume 
this is a NetBSD-specific thing.

Could someone who understands the huge patchset that we're applying to 
this package please take a look and ensure it's portable to non-NetBSD?

Thanks,

--
Jonathan Perkin  -  Joyent, Inc.  -  www.joyent.com