tests/test-hup

store: simplify walking

- fold in main walking function
- eliminate recursion (especially recursive yielding!)
- eliminate default args

#!/bin/sh

hg init
mkfifo p

hg serve --stdio < p &
P=$!
(echo lock; echo addchangegroup; sleep 5) > p &
Q=$!
sleep 3
kill -HUP $P
wait
echo .hg/* .hg/store/*