zygo: from zygo-5.0.x-zb64

zygo: from zygo-5.0.x-zb64

zygo: from zygo-4.17.x-zb64

(cherry picked from commit c45b6fb9ce9315c056288bfb5a755fd7eec9a197)

zygo: make oldconfig for v4.18

(cherry picked from commit cc3d6d815e6415c1157435e3f63270e4137b6608)
(cherry picked from commit f44fa222fc6a7df75b02a77e1d663bd8bee67fc5)

zygo: make oldconfig for 4.19.1

(cherry picked from commit 9c6ad550267932f5a4992c5d1f46980793c6a9a6)

zygo: make oldconfig for 4.19.7

(cherry picked from commit 002c486977a9a83a1e1385ec6de2746668de02f9)
(cherry picked from commit 63f6b068f316598eade19e31a1095ad7dbc700ba)

zygo: make oldconfig for v4.20

(cherry picked from commit 9a1ea99f7eada69738307d2898161a82e27310e2)
(cherry picked from commit db51f3f667ac3d5fa0851e4a49fce64f2a46ebf6)
(cherry picked from commit e0d2aa5082fcad29770f5786ae2a41fd100bdcde)
(cherry picked from commit d117937ed23d27b41faf7a4c2d16ebe463459d21)