verify: fix "missing revlog!" errors for revlog format v0 and add test
With revlog format v0 the .d files are empty if the only revision stored is an
empty file. Since Mercurial can no longer create format v0 repositories, but
still use it, add a script which creates a repository with a single empty file.
This can be used in other tests if wanted.
#!/bin/sh
. "$TESTDIR/bzr-definitions"
cat > treeset.py <<EOF
import sys
from bzrlib import workingtree
wt = workingtree.WorkingTree.open('.')
message, rootid = sys.argv[1:]
wt.set_root_id('tree_root-%s' % rootid)
wt.commit(message)
EOF
echo % change the id of the tree root
mkdir test-change-treeroot-id
cd test-change-treeroot-id
bzr init -q source
cd source
echo content > file
bzr add -q file
bzr commit -q -m 'Initial add'
python ../../treeset.py 'Changed root' new
cd ..
hg convert source source-hg
manifest source-hg tip