build, crypto, script: remove most of OpenSSL usage #2800

Job	Run time
Lint	1m 4s
macOS 11 native [GOAL install] [GUI] [no depends]	8m 50s
ARM [GOAL install] [buster]	4m 32s
Win32	4m 28s
Win64	6m 31s
i386 Linux [GOAL install] [focal]	3m 41s
x86_64 Linux [GOAL install] [GUI] [focal] [no depends]	27m 22s
x86_64 Linux [GOAL install] [GUI] [bionic] [no depends]	20m 9s
macOS 10.14 [GOAL deploy] [GUI] [no tests] [focal]	13m 12s
	1h 29m 49s

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