[ESS] small elisp library for iESS

[Richard M. Heiberger]

Let me second Martin's comment about function keys.

I have my own set of preferred function keys and strongly object
to any software overriding them without my explicit permission.

Optional code for setting function keys, subject to a variable set in
.emacs for example, is fine.  The default setting should be to leave the
function keys alone.

Rich