The function OPENSSL_load_builtin_modules() adds all the standard
OpenSSL configuration modules to the internal list. They can then be
used by the OpenSSL configuration code.
ASN1_add_oid_module() adds just the ASN1 OBJECT module.
ENGINE_add_conf_module() adds just the ENGINE configuration module.
NOTES
If the simple configuration function OPENSSL_config() is called then
OPENSSL_load_builtin_modules() is called automatically.
Applications which use the configuration functions directly will need
to call OPENSSL_load_builtin_modules() themselves before any other configuration code.
Applications should call OPENSSL_load_builtin_modules() to load all
configuration modules instead of adding modules selectively:
otherwise functionality may be missing from the application if an
when new modules are added.
