Ultrix patches for bind 8.2.2-P3

[Paul A Vixie]

> > vsprintf always returns an int.
> 
> 	Ok.  Lets make __isc_sprintf return the return value from
> 	vsprintf then.

this implies a "#define isc_sprintf __isc_sprintf" in an include file
somewhere.  we won't put __ into .c files.