3.12-stable patches

3.12-stable patches

added patches:
	btrfs-call-mnt_drop_write-after-interrupted-subvol-deletion.patch
	btrfs-fix-access_ok-check-in-btrfs_ioctl_send.patch
	dm-array-fix-a-reference-counting-bug-in-shadow_ablock.patch
	dm-bufio-initialize-read-only-module-parameters.patch
	dm-delay-fix-a-possible-deadlock-due-to-shared-workqueue.patch
	dm-snapshot-avoid-snapshot-space-leak-on-crash.patch
	dm-space-map-disallow-decrementing-a-reference-count-below-zero.patch
	dm-space-map-metadata-return-on-failure-in-sm_metadata_new_block.patch
	dm-stats-initialize-read-only-module-parameter.patch
	dm-table-fail-dm_table_create-on-dm_round_up-overflow.patch
	dm-thin-allow-pool-in-read-only-mode-to-transition-to-read-write-mode.patch
	dm-thin-always-fallback-the-pool-mode-if-commit-fails.patch
	dm-thin-re-establish-read-only-state-when-switching-to-fail-mode.patch
	dm-thin-switch-to-read-only-mode-if-a-mapping-insert-fails.patch
	dm-thin-switch-to-read-only-mode-if-metadata-space-is-exhausted.patch
	media-af9033-fix-broken-i2c.patch
	media-af9035-add-leadtek-winfast-dtv-dongle-dual.patch
	media-af9035-unlock-on-error-in-af9035_i2c_master_xfer.patch
	media-bttv-don-t-setup-the-controls-if-there-are-no-video-devices.patch
	media-saa7164-fix-return-value-check-in-saa7164_initdev.patch
	media-tef6862-radio-tea5764-actually-assign-clamp-result.patch
	media-wm8775-fix-broken-audio-routing.patch