3.18-stable patches

3.18-stable patches

added patches:
	dcache-fix-kmemcheck-warning-in-switch_names.patch
	dm-bufio-fix-memleak-when-using-a-dm_buffer-s-inline-bio.patch
	dm-cache-dirty-flag-was-mistakenly-being-cleared-when-promoting-via-overwrite.patch
	dm-cache-fix-spurious-cell_defer-when-dealing-with-partial-block-at-end-of-device.patch
	dm-cache-only-use-overwrite-optimisation-for-promotion-when-in-writeback-mode.patch
	dm-crypt-use-memzero_explicit-for-on-stack-buffer.patch
	dm-space-map-metadata-fix-sm_bootstrap_get_nr_blocks.patch
	dm-thin-fix-a-race-in-thin_dtr.patch
	dm-thin-fix-inability-to-discard-blocks-when-in-out-of-data-space-mode.patch
	dm-thin-fix-missing-out-of-data-space-to-write-mode-transition-if-blocks-are-released.patch
	f2fs-avoid-returning-uninitialized-value-to-userspace-from-f2fs_trim_fs.patch
	f2fs-fix-possible-data-corruption-in-f2fs_write_begin.patch
	megaraid_sas-corrected-return-of-wait_event-from-abort-frame-path.patch
	megaraid_sas-dndinaness-related-bug-fixes.patch
	nfs41-fix-nfs4_proc_layoutget-error-handling.patch
	regulator-anatop-set-default-voltage-selector-for-vddpu.patch
	scsi-correct-return-values-for-.eh_abort_handler-implementations.patch