MFH: Make spl_register_std_class() and spl_register_sub_class() available outside of SPL, for instance in SPL_Types.

ext/spl/spl_functions.c

@@ -50,7 +50,7 @@ void spl_register_interface(zend_class_entry ** ppce, char * class_name, zend_fu
 /* }}} */
 
 /* {{{ spl_register_std_class */
-void spl_register_std_class(zend_class_entry ** ppce, char * class_name, void * obj_ctor, zend_function_entry * function_list TSRMLS_DC)
+PHPAPI void spl_register_std_class(zend_class_entry ** ppce, char * class_name, void * obj_ctor, zend_function_entry * function_list TSRMLS_DC)
 {
 	zend_class_entry ce;
 	
@@ -66,7 +66,7 @@ void spl_register_std_class(zend_class_entry ** ppce, char * class_name, void *
 /* }}} */
 
 /* {{{ spl_register_sub_class */
-void spl_register_sub_class(zend_class_entry ** ppce, zend_class_entry * parent_ce, char * class_name, void *obj_ctor, zend_function_entry * function_list TSRMLS_DC)
+PHPAPI void spl_register_sub_class(zend_class_entry ** ppce, zend_class_entry * parent_ce, char * class_name, void *obj_ctor, zend_function_entry * function_list TSRMLS_DC)
 {
 	zend_class_entry ce;