Socket library from hslibs

[Chris Webb]

For simple networking, I usually find that the simple Socket interface
from hslibs does everything I need, except that I always need to import
sClose from SocketPrim as well, so I can close the sockets I open.
Tidying up some old code this morning, I was wondering: is the absence
of sClose in the Socket interface accidental, or should I be disposing
of listening sockets some other way?

Cheers,
Chris.