3.18-stable patches

3.18-stable patches

added patches:
	cdc-acm-memory-leak-in-error-case.patch
	drbd-fix-state-change-in-case-of-connection-timeout.patch
	drbd-merge_bvec_fn-properly-remap-bvm-bi_bdev.patch
	drivers-hv-util-make-struct-hv_do_fcopy-match-hyper-v-host-messages.patch
	drivers-hv-vmbus-fix-a-race-condition-when-unregistering-a-device.patch
	genhd-check-for-int-overflow-in-disk_expand_part_tbl.patch
	n_tty-fix-read_buf-race-condition-increment-read_head-after-pushing-data.patch
	reiserfs-destroy-allocated-commit-workqueue.patch
	serial-samsung-wait-for-transfer-completion-before-clock-disable.patch
	tracing-sched-check-preempt_count-for-current-when-reading-task-state.patch
	tty-serial-men_z135_uart-add-terminating-entry-for-men_z135_ids.patch
	writeback-fix-a-subtle-race-condition-in-i_dirty-clearing.patch
	xtensa-fix-kmap_prot-definition.patch