4.0-stable patches

4.0-stable patches

added patches:
	btrfs-don-t-accept-bare-namespace-as-a-valid-xattr.patch
	btrfs-fix-inode-eviction-infinite-loop-after-cloning-into-it.patch
	btrfs-fix-inode-eviction-infinite-loop-after-extent_same-ioctl.patch
	btrfs-fix-log-tree-corruption-when-fs-mounted-with-o-discard.patch
	kvm-x86-fix-msr_ia32_bndcfgs-in-msrs_to_save.patch
	md-fix-md-io-stats-accounting-broken.patch
	mm-hugetlb-use-pmd_page-in-follow_huge_pmd.patch
	perf-x86-intel-fix-core2-atom-nhm-wsm-cycles-pp-events.patch
	powerpc-hugetlb-call-mm_dec_nr_pmds-in-hugetlb_free_pmd_range.patch
	sched-idle-x86-optimize-unnecessary-mwait_idle-resched-ipis.patch
	sched-idle-x86-restore-mwait_idle-to-fix-boot-hangs-to-improve-power-savings-and-to-improve-performance.patch
	x86-asm-decoder-fix-and-enforce-max-instruction-size-in-the-insn-decoder.patch
	x86-fix-special-__probe_kernel_write-tail-zeroing-case.patch
	x86-kvm-revert-remove-sched-notifier-for-cross-cpu-migrations.patch
	x86-vdso-fix-pvclock-races-with-task-migration.patch