Use std atomics #579

Job	Run time
Build (ubuntu, x64, openssl, static)	2m 10s
Build (ubuntu, x64, openssl, shared)	1m 58s
Build (ubuntu, arm64, openssl, static)	1m 49s
Build (ubuntu, arm64, openssl, shared)	2m 9s
Build (windows, x86, schannel, static)	3m 10s
Build (windows, x86, schannel, shared)	3m 20s
Build (windows, x86, openssl, static)	4m 11s
Build (windows, x86, openssl, shared)	4m 6s
Build (windows, x64, schannel, static)	3m 0s
Build (windows, x64, schannel, shared)	3m 4s
Build (windows, x64, openssl, static)	4m 27s
Build (windows, x64, openssl, shared)	4m 50s
Build (windows, arm64, schannel, static)	3m 19s
Build (windows, arm64, schannel, shared)	3m 25s
Build (windows, arm64, openssl, static)	4m 51s
Build (windows, arm64, openssl, shared)	4m 59s
	54m 48s

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