Geiser for Scheme48 1.9 (and scsh)

Hi all,

I have Geiser up and running with S48 1.9 (and thus scsh 0.7).  Geiser
is a Scheme interaction mode for Emacs -- see http://nongnu.org/geiser
for details.

It's quite rough, with lots of missing features, but usable.  If anyone
would like to use it (and hopefully hack on it!), here's the procedure:

1. Check out the `s48-1.9-wip' branch from
https://github.com/rmloveland/geiser-scsh  [*]

2. Set up the Geiser customizations as described here:
https://logicgrimoire.wordpress.com/2014/01/11/geiser-and-scsh-are-talking/

It is quite `alpha', and any help with it will be appreciated!  Please
send pull requests or open issues on Github (or email patches if you
don't use Github), 

Thanks!
Rich Loveland

[*]  The notes above are for S48 1.9 and scsh 0.7 people; if you want to
use Geiser for scsh 0.6.7, the instructions are nearly the same -- just
use the master branch.