changed $HOME of stats an nobody users to /usr/share/empty. It is because of

changed $HOME of stats an nobody users to /usr/share/empty. It is because of
davfs2, which does not allow non-root user to mount filesystem into $HOME of
another user, so it won't work if any user has "/" as its home. Note that it
does not introduce dependency from package containing /usr/share/empty
directory.  These users don't use their $HOME so it don't have to be real
directory.

Changed files:
    etc/passwd -> 1.15