xfs_scrub: remove ALP_* flags namespace

xfs_scrub: remove ALP_* flags namespace

In preparation to move all the repair code to repair.[ch], remove the
ALP_* flags namespace since it mostly overlaps with XRM_*.  Rename the
clunky "COMPLAIN_IF_UNFIXED" flag to "FINAL_WARNING", because that's
what it really means.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>