Merge r1919860 from trunk: #1160

Job	Run time
Empty APLOGNO() test	35s
Default	4m 47s
All-static modules	4m 40s
Prefork MPM, all-modules (except cgid)	5m 42s
Worker MPM, all-modules	5m 36s
Shared MPMs, all-modules	5m 8s
Event MPM, all-modules, mod_cgid fdpassing	5m 6s
Event MPM, all-modules, mod_cgid w/o fdpassing	6m 7s
Default, all-modules + install	5m 12s
Default, all-modules, random test order	5m 9s
GCC 10 maintainer-mode w/-Werror, install + VPATH	2m 58s
All-modules, APR 1.7.4, APR-util 1.6.3	5m 41s
APR 1.8.x, APR-util 1.7.x	6m 28s
Pool-debug	5m 45s
Shared MPMs (event), pool-debug, SSL/TLS variants	8m 37s
Shared MPMs (worker), pool-debug, SSL/TLS variants	7m 49s
Shared MPMs (prefork), pool-debug, SSL/TLS variants	9m 1s
litmus WebDAV tests	2m 42s
APR 1.7.4, APR-util 1.6.3, LDAP	5m 28s
APR 1.7.x, APR-util 1.7.x, LDAP	5m 40s
APR trunk thread debugging	5m 32s
ASan	6m 19s
ASan, pool-debug	7m 10s
HTTP/2 test suite	5m 14s
	2h 12m 26s

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