btrfsprogs: Collective update

This update fixes the following issues for btrfsprogs:
- 727383: updated mkinitrd script to scan devices before mount
- 710486: fix segfaults due to unchecked usage of return value of open_ctree()
- updated to upstream
- update 'restore' utility
- lzo support
- tools may now take earlies superblock when opening the fs
- mkfs: force mkfs if desired
- add btrfs-dump-super to mkinitrd
- skip non-existent devices or without media
- documentation updates
- scrubbing single device
- graceful error handling when open fs fails

Fixed bugs
bnc#727383
btrfs raid1: not possible to boot with multi drive btrfs setup for root partition
bnc#710486
btrfsprogs: several commands end with segfault
Selected Binaries
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