use a more reliable way to find what are the new changesets on pull/unbundle The number of csets and the hooks where wrong (negative number of csets) when we unbundled a bundle which contains csets we already had. Remove unused variables.

#!/bin/sh

hg init

echo "Is there an error message when trying to diff non-existing files?"
hg diff not found

echo "Is there an error message when trying to add non-existing files?"
hg add not found