don't merge slashes on perdir prefix #1106

Job	Run time
Empty APLOGNO() test	26s
Default	4m 36s
All-static modules	5m 0s
Prefork MPM, all-modules (except cgid)	5m 34s
Worker MPM, all-modules	5m 6s
Shared MPMs, all-modules	5m 41s
Event MPM, all-modules, mod_cgid only	5m 14s
Event MPM, all-modules, no CMSG_DATA	5m 17s
Default, all-modules + install	5m 38s
Default, all-modules, random test order	5m 20s
GCC 10 maintainer-mode w/-Werror, install + VPATH	3m 23s
All-modules, APR 1.7.4, APR-util 1.6.3	5m 46s
APR 1.8.x, APR-util 1.7.x	6m 32s
Pool-debug	6m 14s
Shared MPMs (event), pool-debug, SSL/TLS variants	9m 55s
Shared MPMs (worker), pool-debug, SSL/TLS variants	9m 48s
Shared MPMs (prefork), pool-debug, SSL/TLS variants	9m 25s
litmus WebDAV tests	3m 15s
litmus WebDAV tests, APR trunk, LMDB	3m 38s
Regenerate ap_expr	5m 23s
APR 1.7.4, APR-util 1.6.3, LDAP	6m 5s
APR trunk thread debugging	5m 50s
UBSan	6m 5s
ASan	6m 54s
ASan, pool-debug	7m 25s
HTTP/2 test suite	5m 34s
MOD_TLS test suite	3m 35s
Configured w/reduced exports	2m 6s
OpenSSL 3.1	7m 44s
OpenSSL 3.2 -Werror	8m 22s
OpenSSL 3.2 no-engine	7m 33s
OpenSSL 3.3 no-engine -Werror	9m 8s
	3h 7m 32s

Provide feedback