Comment 6 for bug 683605

When we end up in this situation the kernel has already had its oppotunity to resume from the image, and as it has not fixed the swap signature has chosen not to do so. The current behaviour of swapon is to restore the swap signature if it finds any one of the hibernate IDs, cleaning up the image. It seems appropriate to add this new signature to both blkid and swapon such that the same processing is used.