convert/bzr: fix test of divergent nested renames for bzr 1.x
54c0517c0fe8 introduced a new block in test-convert-bzr-directories.t
which produces a slightly different output with older bzr versions.
Tested with bzr 1.5 on Debian lenny.
$ echo "[extensions]" >> $HGRCPATH
$ echo "mq=" >> $HGRCPATH
$ hg init
$ echo 'base' > base
$ hg ci -Ambase
adding base
$ hg qnew -mmqbase mqbase
$ hg qsave
$ hg qrestore 2
restoring status: hg patches saved state