Fix no-err

Fix no-err

The ERR_load_*_strings() functions were not being defined in a no-err
build. This is an API break since in 1.1.1 they were still present in a
no-err build, but were no-ops. This was also causing a failure in
test_symbol_presence. We revert to the way things were done in 1.1.1,
i.e. in a no-err build the functions are still present but are no-ops.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/13598)