bump for 3.14.21: update minimum version, remove included patches, fixup
fix name
delete for now; to be replaced later
vfs straggler: reduce use of atomic ops
btrfs: send fixes from 3.15+ and a new one
btrfs: new ioctl TREE_SEARCH_V2
btrfs: fix inline data size to 8k
btrfs: more superblock checks during mount
btrfs: cleanups from 3.18
btrfs: re-add crash fix
btrfs: correctly handle security mount options