tests/test-empty

setup.py: subprocess instead of os.popen, sys.stderr.write instead of print

Also check that .hg is a directory.

#!/bin/sh

hg init a
cd a
hg log
hg grep wah
hg manifest
hg verify
ls .hg
ls .hg/store

cd ..
hg clone a b
cd b
hg verify
ls .hg
ls .hg/store