sname defaulting

[DLW at MIT-AI (Daniel L. Weinreb)]

I just did (qc-file "cdtb") after sending some mail, and it defaulted
the directory to ".MAIL.".  This is non-ideal.  I think there ought to
be a "working directory" at all times, and that things like qc-file
should call a version of the filename parser that will default to that
working directory.  Defaulting to the working directory should be the
general thing to do; it should be made easy for programs to do this; the
standard function for expanding pathnames should default this way.
Maybe the working directory should be displayed in the who-line (if we
can dig up some room for it).