tests/test-copy

make update quieter when nothing is wrong

sometimes when i am going around in my history, i get long lists of
errors from the update command. this patch will fix that. i tried to
make the code style the same like the rest of the code.

#!/bin/sh

hg init
echo a > a
hg add a
hg commit -m "1" -d "0 0"
hg status
hg copy a b
hg status
hg --debug commit -m "2" -d "0 0"
echo "we should see two history entries"
hg history -v
echo "we should see one log entry for a"
hg log a
echo "this should show a revision linked to changeset 0"
hg debugindex .hg/data/a.i
echo "we should see one log entry for b"
hg log b
echo "this should show a revision linked to changeset 1"
hg debugindex .hg/data/b.i

echo "this should show the rename information in the metadata"
hg debugdata .hg/data/b.d 0 | head -n 3 | tail -n 2

md5sum .hg/data/b.d
hg cat b > bsum
md5sum bsum
hg cat a > asum
md5sum asum
hg verify