3.18-stable patches

3.18-stable patches

added patches:
	arch-hexagon-fix-kernel-dma.c-build-warning.patch
	cifs-read-overflow-in-is_valid_oplock_break.patch
	dm-thin-metadata-try-to-avoid-ever-aborting-transactions.patch
	fs-cifs-suppress-a-string-overflow-warning.patch
	hexagon-modify-ffs-and-fls-to-return-int.patch
	pinctrl-msm-really-mask-level-interrupts-to-prevent-latching.patch
	r8169-clear-rtl_flag_task_-_pending-when-clearing-rtl_flag_task_enabled.patch
	rdma-ucma-check-fd-type-in-ucma_migrate_id.patch
	s390-qeth-don-t-dump-past-end-of-unknown-hw-header.patch
	usb-gadget-fotg210-udc-fix-memory-leak-of-fotg210-ep.patch
	usb-yurex-check-for-truncation-in-yurex_read.patch
	xen-fix-gcc-warning-and-remove-duplicate-evtchn_row-evtchn_col-usage.patch
	xen-manage-don-t-complain-about-an-empty-value-in-control-sysrq-node.patch