This update fixes the following issues for btrfsprogs:
- add several tools to mkinitrd if root fs is btrfs
- pull upstream branch and delete local patches
- 655906: btrfsck ignore -a
- btrfsck fix strerror value
- Remove redundant tags/sections from specfile
- Use %_smp_mflags for parallel build
- add patch for local version override as we do not build from git, and avoid doubled "Btrfs" in output of 'btrfs'
- reorder help for 'get-default' right after 'set-default'
- add option -p to print parent subvolume
- add subvolume 'get-default' subsubcommand