[ENBD] change to Makefile

[Peter T. Breuer]

"Also sprach Peter T. Breuer:"
> "Also sprach Roberto Favaro:"
> > INSTALL      = install -D
> 
> I don't know how universal -d is on install, and I don't understand the 
> definition:
> 
>          -d, --directory
>               treat all arguments as directory names; create  all
>               components of the specified directories

Oh, I see, you said -D!

    -D     create  all  leading  components of DEST except the
           last, then copy SOURCE to DEST;  useful in the  1st format

Peter