Linux

Merge r1838684, r1920570, r1920571, r1920572 from trunk: #1179

Job	Run time
Empty APLOGNO() test	39s
Default	2m 10s
All-static modules	1m 57s
Prefork MPM, all-modules (except cgid)	2m 34s
Worker MPM, all-modules	2m 38s
Shared MPMs, all-modules	2m 25s
Event MPM, all-modules, mod_cgid fdpassing	5m 38s
Event MPM, all-modules, mod_cgid w/o fdpassing	2m 27s
Default, all-modules + install	2m 26s
Default, all-modules, random test order	2m 43s
GCC 10 maintainer-mode w/-Werror, install + VPATH	27s
All-modules, APR 1.7.4, APR-util 1.6.3	3m 21s
APR 1.8.x, APR-util 1.7.x	6m 41s
Pool-debug	6m 14s
Shared MPMs (event), pool-debug, SSL/TLS variants	8m 13s
Shared MPMs (worker), pool-debug, SSL/TLS variants	8m 19s
Shared MPMs (prefork), pool-debug, SSL/TLS variants	9m 46s
litmus WebDAV tests	2m 18s
APR 1.7.4, APR-util 1.6.3, LDAP	3m 49s
APR 1.7.x, APR-util 1.7.x, LDAP	5m 49s
APR trunk thread debugging	2m 56s
ASan	7m 8s
ASan, pool-debug	7m 47s
HTTP/2 test suite	7m 17s
	1h 45m 42s

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