mod_proxy_fcgi: Use r->uri rather than r->filename for directory walk. #1078

Job	Run time
Empty APLOGNO() test	25s
Default	3m 35s
All-static modules	3m 38s
Prefork MPM, all-modules (except cgid)	4m 20s
Worker MPM, all-modules	4m 17s
Shared MPMs, all-modules	4m 23s
Event MPM, all-modules, mod_cgid only	3m 56s
Event MPM, all-modules, no CMSG_DATA	4m 18s
Default, all-modules + install	4m 17s
Default, all-modules, random test order	4m 3s
GCC 10 maintainer-mode w/-Werror, install + VPATH	3m 26s
All-modules, APR 1.7.4, APR-util 1.6.3	4m 11s
APR 1.8.x, APR-util 1.7.x	5m 40s
Pool-debug	5m 55s
Shared MPMs (event), pool-debug, SSL/TLS variants	9m 37s
Shared MPMs (worker), pool-debug, SSL/TLS variants	9m 20s
Shared MPMs (prefork), pool-debug, SSL/TLS variants	9m 21s
litmus WebDAV tests	2m 23s
litmus WebDAV tests, APR trunk, LMDB	2m 58s
Regenerate ap_expr	4m 0s
APR 1.7.4, APR-util 1.6.3, LDAP	4m 0s
APR trunk thread debugging	4m 35s
UBSan	4m 36s
ASan	6m 45s
ASan, pool-debug	7m 17s
HTTP/2 test suite	4m 56s
MOD_TLS test suite	2m 45s
Configured w/reduced exports	1m 50s
OpenSSL 3.1	3m 27s
OpenSSL 3.2 -Werror	4m 14s
OpenSSL 3.2 no-engine	3m 22s
OpenSSL 3.3 no-engine -Werror	4m 3s
	2h 25m 53s

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