3.4-stable patches

3.4-stable patches

added patches:
	dm-bufio-avoid-a-possible-__vmalloc-deadlock.patch
	dm-mpath-fix-race-condition-between-multipath_dtr-and-pg_init_done.patch
	dm-snapshot-add-missing-module-aliases.patch
	dm-snapshot-avoid-snapshot-space-leak-on-crash.patch
	dm-thin-fix-discard-corruption.patch
	md-raid10-fix-enough-function-for-detecting-if-array-is-failed.patch
	nfs-nfs_getaclargs.acl_len-is-a-size_t.patch
	nfsd-don-t-run-get_file-if-nfs4_preprocess_stateid_op-return-error.patch
	nfsd-nfsd_open-when-dentry_open-returns-an-error-do-not-propagate-as-struct-file.patch
	nfsd4-fix-xdr-decoding-of-large-non-write-compounds.patch
	nfsv4-wait-on-recovery-for-async-session-errors.patch
	nfsv4.1-don-t-decode-skipped-layoutgets.patch
	nfsv4.1-fix-a-race-in-pnfs-layoutcommit.patch
	nfsv4.1-handle-nfs4err_delay-when-resetting-the-nfsv4.1-session.patch
	nfsv4.1-integer-overflow-in-decode_cb_sequence_args.patch