tests/test-hook

Change test-hook to test multiple hooks

#!/bin/sh

hg init
echo "[hooks]" > .hg/hgrc
echo 'precommit = echo precommit hook' >> .hg/hgrc
echo 'commit = echo commit hook: $NODE' >> .hg/hgrc
echo 'commit.b = echo commit hook b' >> .hg/hgrc
echo a > a
hg add a
hg commit -m "test" -d "0 0"