Summarized changes:
- mkfs.xfs: null-terminate symlinks created via protofile
- xfs_repair: allow '/' in attribute names
- xfs_repair: skip block reservation when fixing freelist
- xfs_repair: rebuild dir when nonroot blocks corrupt
- xfs_repair: int nonleaf finobt blocks with proper magic
- xfs_repair: fix off by one error rebuilding high keys
- xfs_io: allow open file permissions to be changed
- xfs_io: open pipes in non-blocking mode
- xfs_metadump: multiple stale data zeroing fixes
- xfs_quota: allow reg files w/o prjinherit flag
- xfs_db: properly decode finobt record w/ sparse inodes
- xfs_db: fix frag command to work w/ sparse inodes
- xfs_scrub: move all executables to /usr/sbin
- xfs_scrub: handle totally empty inode chunks
- xfs.5 manpage: Remove barrier related options
- xfs_io.8 manpage: rearrange command listings by section
- Merge libxfs from kernel 4.20