cf90398197
- Added lfsr_mdir_lookupnext, for iteration through only a single mid. This is useful for MOVE attributes. - Renamed LFSR_MDIR_MROOTANCHOR -> LFSR_MROOTANCHOR. - Renamed functions that operate on mdir blocks lfsr_mdir_* -> lfsr_mblocks_*. - Reordered arguments in lfsr_mdir_fetch. - Renamed mrid_bits/mbid_weight -> mbits/mweight.