MFC: r284583, r285797, r285799, r287168, r298714, r298720, r298838, r300879Merge ACPICA up to 20160527.Requested by: mav
MFC: r283092, r283966Merge ACPICA 20150515.Relnotes: yes
MFC r272444 (by jkim): Merge ACPICA 20140926.MFC r278970 (by jkim): Merge ACPICA 20141107 and 20150204.Approved by: jkimRelnotes: yes