build: export OpenSSL UI symbols
Node.js compiles them, their existence is indicated by OpenSSL header defines, but they can't be linked to on Windows because their symbols are not exported. Export them.
Fixes: https://github.com/nodejs/node/issues/27494
See https://github.com/nodejs/node/issues/27494#issuecomment-488085207 for more info.
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
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