You will not see those configure args listed in phpinfo() because the listed configure args are for the base php executable or library only; extra modules that are installed as separate ports, like php53-openssl, are compiled as separate loadable plugins, and I don't think the arguments with which they were configured are shown to you anywhere by php.
As long as you see an "openssl" section in phpinfo(), which should show "OpenSSL support enabled", everything should be fine. Also of course you can just test whether openssl functions are working properly.
