Changes:
- libbtrfsutil - new LGPL library to wrap userspace functionality
- prevent incorrect use of subvol_strip_mountpoint
- dump-super: don't verify csum for unknown type
- convert: fix inline extent creation condition
- image: handle missing device for RAID1
- dump-tree: add option to print only children nodes of a given block
- mkfs: add UUID and otime to root of FS_TREE - with the uuid, snapshots will be now linked to the toplevel subvol by the parent UUID
- mkfs: don't follow symlinks when calculating size
- mkfs: pre-create the UUID tree
- mkfs: detect if thin-provisioned device does not have enough space
- remove obsolete tools: btrfs-debug-tree, btrfs-zero-log, btrfs-show-super, btrfs-calc-size
- sb-mod: new debugging tool to edit superblock items
- check: don't try to verify checksums on metadata dump images
Full changelog available here.