Hi Colin,

What do you think of the following patch?  I added a variable to control
whether calc displays `--- Emacs Calculator Mode ---' above the stack or
not (it seems useless to me, so I don't want to waste the space).

It seems to work OK, based on my um, light testing, but I'm not sure
whether there are additional places that need to be tweaked or not, or
whether I fit it into calc in the best way.

Also, the patch makes a binding to toggle the banner display (`d @' --
couldn't find many unbound keys!), but I'm not sure if it's worth it to
have a command at all, or whether it should just be a .emacs-only variable.

Thanks,

-Miles


Here's the patch: