Merge remote-tracking branch 'upstream/v1.x' into v1.x #41

Job	Run time
build-android	2m 16s
build-ios	2m 9s
build-cross-qemu-arm	1m 35s
build-cross-qemu-armhf	1m 47s
build-linux	1m 40s
build-macos	4m 4s
build-cross-qemu-aarch64	1m 43s
build-cross-qemu-riscv64	2m 5s
build-cross-qemu-ppc	1m 40s
build-cross-qemu-ppc64	1m 39s
build-cross-qemu-ppc64le	1m 42s
build-cross-qemu-s390x	1m 35s
build-cross-qemu-mips	1m 37s
build-cross-qemu-mips64	1m 44s
build-cross-qemu-mipsel	1m 43s
build-cross-qemu-mips64el	1m 36s
build-cross-qemu-arm (u64 slots)	1m 41s
build-cross-qemu-aarch64 (u64 slots)	2m 12s
build-cross-qemu-ppc (u64 slots)	1m 38s
build-cross-qemu-ppc64 (u64 slots)	1m 39s
	37m 45s

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