[arch-dev-public] New extra package: gnucash

[Dale Blount]

> > 1. gnucash depends on slib, which is in community currently
> > 3. gnucash depends on aqbanking which is also in community (and which
> > we are also currently having runtime problems with)
> 
> Ah good catch, I was not aware of these two deps not being in extra. Silly me.
> 
> So guys: adding gnucash to extra would pull in these two deps. Is this
> still acceptable?
> 

Fine by me.

Dale