Linux

Merge r1920061, r1920070 from trunk: #581

Job	Run time
Default	3m 27s
Static	3m 28s
Maintainer-mode	3m 32s
Named SHM - SysV, Maintainer-mode	3m 38s
Named SHM - Classic mmap, Maintainer-mode	3m 36s
Pool-debug	3m 32s
Pool-debug, maintainer-mode	3m 26s
Maintainer-mode, no IPv6	3m 34s
Maintainer-mode, -Werror	3m 33s
ASan	3m 35s
ASan, pool-debug	3m 41s
UBsan	3m 34s
	42m 36s

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