- allow namespace to be omitted when using a namespace-prefixed attribute
name, a la Linux.
- Improve hexdump for getextattr -x
- Add more display option for binary attributes, using vis(3)
- Add a -i option to setextattr to get the attribute value from file, so
that we can set binary values
Also use name under which it is installed as main internal name.
Comment out reference to extattr(2) which doesn't exist on NetBSD
(a reference to extattr(3) still remains).
wiz