Initial OpenSSL 3.0 support (#1288) * openssl-3: ci: use ubuntu 22.04 with OpenSSl 3.0 instead of building OpenSSL from sources ci: set LD_LIBRARY_PATH for openssl 3.0 build test: suppress warning for already defined SSL_get_peer_certificate autotools: print $OPENSSL_LIBS/$OPENSSL_INCS Suppress -Wunused-value for BIO_set_close() Use OPENSSL_VERSION_NUMBER over OPENSSL_VERSION_MAJOR (for compatibility) Attempt to add OpenSSL 3 to the Linux build matrix Initial OpenSSL 3.0 support