[ESS] elisp code: show function arguments

[Stephen Eglen]

Dear Sven,

Thanks for this.  Nice web page:

 > I have just updated my elisp functions that show the R arguments:
 > http://www.svenhartenstein.de/emacs-ess.php

 > The new functions are also GPLed, so that ESS core can use and modify
 > it for ESS inclusion.
 > 
 > @ESS-core: Any roadmap for this feature? How can I best help now, or
 > should I better leave the code to you elisp experts now? Please let me
 > know what I would best do. Anyway, I'll be on holidays until Thuesday
 > and will hardly even check my e-mails.
 > 
I think we should try to get this into ess-core.  I'll take a look.

Stephen