build, crypto, script: remove most of OpenSSL usage #2783

Job	Run time
Lint	1m 0s
ARM [GOAL install] [buster]	21m 25s
macOS 11 native [GOAL install] [GUI] [no depends]	21m 47s
Win32	21m 25s
Win64	47m 42s
i386 Linux [GOAL install] [focal]	18m 7s
x86_64 Linux [GOAL install] [GUI] [focal] [no depends]	24m 41s
x86_64 Linux [GOAL install] [GUI] [bionic] [no depends]	33m 37s
macOS 10.14 [GOAL deploy] [GUI] [no tests] [focal]	41m 34s
	3h 51m 18s

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