Removed last use of S3fsMultiCurl and changed those thread handling #2379

Job	Run time
clang-tidy	7m 15s
clang-tidy	7m 15s
MemoryTest (glibc_debug)	13m 30s
MemoryTest (glibc_debug)	13m 30s
Linux (ubuntu:24.10)	2m 50s
Linux (ubuntu:24.10)	12m 14s
MemoryTest (sanitize_address)	13m 57s
MemoryTest (sanitize_address)	13m 57s
Linux (ubuntu:24.04)	12m 34s
Linux (ubuntu:24.04)	12m 34s
macos-13	19m 51s
macos-13	19m 51s
MemoryTest (sanitize_others)	12m 36s
MemoryTest (sanitize_others)	12m 36s
Linux (ubuntu:22.04)	12m 24s
Linux (ubuntu:22.04)	12m 24s
MemoryTest (sanitize_thread)	14m 32s
MemoryTest (sanitize_thread)	14m 32s
Linux (ubuntu:20.04)	11m 40s
Linux (ubuntu:20.04)	11m 40s
MemoryTest (thread_safety)	13m 16s
MemoryTest (thread_safety)	13m 16s
Linux (debian:bookworm)	13m 50s
Linux (debian:bookworm)	13m 50s
MemoryTest (valgrind)	22m 58s
MemoryTest (valgrind)	22m 58s
Linux (debian:bullseye)	12m 29s
Linux (debian:bullseye)	12m 29s
Linux (rockylinux:9)	12m 44s
Linux (rockylinux:9)	12m 44s
Linux (rockylinux:8)	12m 23s
Linux (rockylinux:8)	12m 23s
Linux (fedora:41)	12m 15s
Linux (fedora:41)	12m 15s
Linux (fedora:40)	12m 3s
Linux (fedora:40)	12m 3s
Linux (opensuse/leap:15)	13m 4s
Linux (opensuse/leap:15)	13m 4s
Linux (alpine:3.20)	12m 36s
Linux (alpine:3.20)	12m 36s
	8h 46m 58s

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