Linux

Implement [ap_]atomics for [u]int/[u]long/size_t and use them for (some) proxy_worker_shared fields #625

Job	Run time
Empty APLOGNO() test	27s
Default	3m 34s
All-static modules	3m 57s
Prefork MPM, all-modules (except cgid)	4m 3s
Worker MPM, all-modules	4m 10s
Shared MPMs, all-modules	4m 0s
Event MPM, all-modules, mod_cgid only	3m 49s
Event MPM, all-modules, no CMSG_DATA	3m 49s
Default, all-modules + install	4m 7s
Default, all-modules, random test order	3m 59s
GCC 10 maintainer-mode w/-Werror, install + VPATH	3m 15s
All-modules, APR 1.7.4, APR-util 1.6.3	5m 49s
APR 1.8.x, APR-util 1.7.x	5m 36s
Pool-debug	5m 38s
Shared MPMs (event), pool-debug, SSL/TLS variants	15m 40s
Shared MPMs (worker), pool-debug, SSL/TLS variants	19m 4s
Shared MPMs (prefork), pool-debug, SSL/TLS variants	16m 0s
litmus WebDAV tests	2m 3s
litmus WebDAV tests, APR trunk, LMDB	2m 18s
Regenerate ap_expr	3m 48s
APR 1.7.4, APR-util 1.6.3, LDAP	5m 26s
APR trunk thread debugging	4m 38s
UBSan	4m 45s
ASan	6m 16s
ASan, pool-debug	6m 58s
HTTP/2 test suite	12m 4s
MOD_TLS test suite	4m 46s
	2h 39m 59s

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