Implement password mechanism registry

RFC: https://wiki.php.net/rfc/password_registry

Author: sgolemon

ext/standard/basic_functions.c

@@ -1860,6 +1860,8 @@ ZEND_BEGIN_ARG_INFO_EX(arginfo_password_verify, 0, 0, 2)
 	ZEND_ARG_INFO(0, password)
 	ZEND_ARG_INFO(0, hash)
 ZEND_END_ARG_INFO()
+ZEND_BEGIN_ARG_INFO(arginfo_password_algos, 0)
+ZEND_END_ARG_INFO();
 /* }}} */
 /* {{{ proc_open.c */
 #ifdef PHP_CAN_SUPPORT_PROC_OPEN
@@ -2926,6 +2928,7 @@ static const zend_function_entry basic_functions[] = { /* {{{ */
 	PHP_FE(password_get_info,												arginfo_password_get_info)
 	PHP_FE(password_needs_rehash,											arginfo_password_needs_rehash)
 	PHP_FE(password_verify,													arginfo_password_verify)
+	PHP_FE(password_algos,													arginfo_password_algos)
 	PHP_FE(convert_uuencode,												arginfo_convert_uuencode)
 	PHP_FE(convert_uudecode,												arginfo_convert_uudecode)