Fix new tests to be better. In particular, fix webraw test to specify a date on commit to be less brittle, and fix test-oldcgi to test fetching a subdirectory of a webdir instance.

#!/bin/sh

mkdir t
cd t
hg init
echo "invalid" > .hg/hgrc
hg status 2>&1 |sed -e "s:/.*\(/t/.*\):...\1:"