tests/test-empty

test-help: improve test coverage

Adds a test for using the help option with the version option.

Extends test coverage of commands.help_ by another 2 lines.

#!/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