Initial module for BTRFS support
Added fsutils, a common place for all functions for all *fs
Added list of BTRFS devices
Added BTRFS defragmentation (by mountpoint, range and device)
Added available BTRFS features for mkfs
Added BTRFS usage in which chunks disks are allocated
Proper run verification
Renamed command from "mkfs_features" to "features".
Added mkfs.btrfs command
Added BTRFS resize
Added BTRFS migration from Ext2/Ext3/Ext4
Bugfix: crash on unformatted device
Added BTRFS restripe (add/delete devices)
Added BTRFS propertiy management
Fix known lint issues
Initial layout for Linux ACL state
Implemented acl.present test option
Licence change: MIT to Apache 2.0
Some lint
Some more lint fixes