* harbour/contrib/hbwin/axcore.c
! removed the hack I added in previous commit with interface enumeration
which was accepting any interface without validation its ID.
+ added 3-rd parameter to __AXREGISTERHANDLER() as Mindaugas proposed.
Now this function has the following syntax:
__AXREGISTERHANDLER( <pDisp>, <bHandler> | <hHandlers>
[, <cIID> ] ) -> <pDisp>
default value for <cIID> is IID_IDispatch.