Adding a README in defunct libtreefs

[Andrea Monaco]

Hello,


I just read on the Hurd Hacking Guide that libtreefs is defunct. Is it
still true?

If that's the case, could we please add a README file in the directory
that says just that?  Perhaps something like "libtreefs was never
finished and is not maintained. It should probably be ignored for all
purposes."

That's because I'm building some pieces of Hurd and I was stuck with the
library a bit before reading that.



Warmly,

Andrea Monaco