Fix non-empty $CDPATH causing failed tests.
If CDPATH contains '.', every cd command prints the target path,
which causes additional output in tests and makes them fail.
hg init test
cd test
echo b > b
hg ci -Am "b"
echo a > a
hg ci -Am "first a"
hg rm a
hg ci -m "del a"
echo b > a
hg ci -Am "second a"
hg rm a
hg ci -m "del2 a"
hg log -p
hg serve -n test -p $HGPORT -d --pid-file=hg.pid -E errors.log
cat hg.pid >> $DAEMON_PIDS
echo % tip - two revisions
("$TESTDIR/get-with-headers.py" localhost:$HGPORT '/log/tip/a')
echo % second version - two revisions
("$TESTDIR/get-with-headers.py" localhost:$HGPORT '/log/3/a')
echo % first deleted - one revision
("$TESTDIR/get-with-headers.py" localhost:$HGPORT '/log/2/a')
echo % first version - one revision
("$TESTDIR/get-with-headers.py" localhost:$HGPORT '/log/1/a')
echo % before addition - error
("$TESTDIR/get-with-headers.py" localhost:$HGPORT '/log/0/a')
echo % errors
cat errors.log