wipefs: Also wipe superblocks with bad checksums

Signed-off-by: Gabriel de Perthuis <g2p.code@gmail.com>
bcache support by Rolf Fokkens

From https://bugzilla.redhat.com/show_bug.cgi?id=1001120#c11
bcache: use blkid_probe_set_csum

Signed-off-by: Gabriel de Perthuis <g2p.code@gmail.com>