Backed out changeset 2ab464771b7d15c60014996d2853efc92cdb8465 - it always runs chmod - uses chmod in an unsafe way - if somebody does a clone of a repo, runs 'make tests', everything is fine, so he can assume the original repo is fine, too, but it is not.

#!/bin/sh

mkdir a
cd a
hg init
echo foo > b
hg add b
hg ci -m "b" -d "1000000 0"

chmod -w .hg

cd ..

hg clone a b

chmod +w a/.hg # let test clean up

cd b
hg verify