4.4-stable patches

4.4-stable patches

added patches:
	btrfs-don-t-remove-block-group-that-still-has-pinned-down-bytes.patch
	btrfs-relocation-only-remove-reloc-rb_trees-if-reloc-control-has-been-initialized.patch
	btrfs-replace-reset-on-disk-dev-stats-value-after-replace.patch
	cifs-check-if-smb2-pdu-size-has-been-padded-and-suppress-the-warning.patch
	dm-kcopyd-avoid-softlockup-in-run_complete_job.patch
	fat-validate-i_start-before-using.patch
	fork-don-t-copy-inconsistent-signal-handler-state-to-child.patch
	fs-dcache.c-fix-kmemcheck-splat-at-take_dentry_name_snapshot.patch
	hfs-prevent-crash-on-exit-from-failed-search.patch
	hfsplus-don-t-return-0-when-fill_super-failed.patch
	hfsplus-fix-null-dereference-in-hfsplus_lookup.patch
	ipvs-fix-race-between-ip_vs_conn_new-and-ip_vs_del_dest.patch
	irqchip-bcm7038-l1-hide-cpu-offline-callback-when-building-for-smp.patch
	mfd-sm501-set-coherent_dma_mask-when-creating-subdevices.patch
	mm-fadvise.c-fix-signed-overflow-ubsan-complaint.patch
	net-9p-fix-error-path-of-p9_virtio_probe.patch
	pci-mvebu-fix-i-o-space-end-address-calculation.patch
	platform-x86-asus-nb-wmi-add-keymap-entry-for-lid-flip-action-on-ux360.patch
	powerpc-fix-size-calculation-using-resource_size.patch
	powerpc-pseries-avoid-using-the-size-greater-than-rtas_error_log_max.patch
	reiserfs-change-j_timestamp-type-to-time64_t.patch
	s390-dasd-fix-hanging-offline-processing-due-to-canceled-worker.patch
	scripts-modpost-check-memory-allocation-results.patch
	scsi-aic94xx-fix-an-error-code-in-aic94xx_init.patch
	selftests-powerpc-kill-child-processes-on-sigint.patch
	smb3-fix-reset-of-bytes-read-and-written-stats.patch
	smb3-number-of-requests-sent-should-be-displayed-for-smb3-not-just-cifs.patch
	staging-comedi-ni_mio_common-fix-subdevice-flags-for-pfi-subdevice.patch
	tracing-handle-cc_flags_ftrace-more-accurately.patch