tests/test-basic

dirstate.walk: eliminate src from yield

- restructure 'step two' to stat unseen files
- remove extra stat logic in status
- remove redundant src

#!/bin/sh

mkdir t
cd t
hg init
echo a > a
hg add a
hg commit -m test -d "1000000 0"
hg history
hg manifest --debug
hg cat a
hg verify