[ESS] [patch] ess-load-file not working with tramp-visited files and ess-remote

[Stephen Eglen]

yes, you're right.  

> > Should the patch have something to make sure tramp is
> > available and loaded?  I don't know when tramp started shipping
> > with Emacs, and even if it's present, does it have to be
> > require'd before calling these functions?

with a fresh Emacs, tramp-tramp-file-p is not autoloaded, so this causes
an error.  I'll commit a change.

Stephen