Migration to gnucash as guile script has begun.

[Rob Browning]

I just finished committing the result of some mildly agonizing time
spent fighting with libtool, ldso, guile, missing/mutual dependencies,
and other friends.

src/gnucash.sh is now a simple guile script that should completely
replicate the behavior of the main gnucash binary -- let me know where
it doesn't.  It gets placed into the install tree in the bin
directory; please give it a try.  Eventually, probably soon,
gnucash.sh will completely replace the current gnucash binary, but I
wanted to get it out for a little testing first.

I consider this a first rough pass, and there are quite a number of
things that already need cleaning up, but it's still kinda amusing.  I
will begin overhauling the whole startup process shortly, with a keen
eye on simplification.

-- 
Rob Browning
rlb @defaultvalue.org, @linuxdevel.com, and @debian.org
Previously @cs.utexas.edu
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