[CM] Snd dlp directory heads-up

[Bill Schottstaedt]

I have moved the dlp directory contents into the main directory and merged
its README into README.Snd.  So any reference to dlp/* should remove the
"dlp/".  This is mainly to simplify load-path settings, and remove one source
of merging confusion on my part.  Unfortunately, sourceforge seems to be
unhappy this morning, so the CVS files are in an inconsistent state.