Changes to NIO for Release 1.06.


NIO now known to work under SunOS 4.1.1.

Better error reporting.

NIOGetConnection() and NIOSetConnection() renamed to NIOGetConnID()
and NIOSetConnID() to avoid the connotation that connections are actually
established by these routines.

The calls NIOSockListen(), NIOSockAccept() and NIOSockConvert() are new.
They provide greater flexibility for applications wishing to obtain sockets
by other means than NIOConnect() or NIOAccept().

Wrote a demo client and server to show how to use these new connection
establishment calls.

NIOSetLogLevel() and NIOGetLogLevel() are new.

Argument structure of the write hook calls has changed.  The caller is
now responsible for supplying the buffer which the hook uses.  Because NIO
itself has no way of knowing what a reasonable maximum buffer size is,
the burden is made to fall on the caller to know.

The hooks are also now called with a NULL argument when an error occurs
within NIORead() or NIOWrite().  This allows the application to install
a single-point error detector, which can be easier than checking the
return value of every single call.  However, the hooks must now be prepared
to handle a NULL argument, which wasn't true for releases prior to 1.06.

Ability to specify timeouts was added.  NIOSetTimeout()/NIOGetTimeout().

Reorganized distribution directory structure.

The client convenience routines NIOReadServer() and NIOReadServerStatus(),
as well as the global buffer nioBuf have been banished to convenience.c
in the snippets directory.  The reasons for this are:
	(i) they force dependence on the ETM and TS libraries for any NIO
	applications, whether the application uses those libraries or not.
	(ii) they assume a particular protocol extension (the
	"OK"/"FAIL"/"INFO" extension), which is not what NIO per se should
	do.
If you want these routines in your application, make a copy of convenience.c
(in snippets directory) and modify it appropriately.