* harbour/src/vm/classes.c
! added missing initialization of onError and destructor flags.
The problem could be exploited when class inherits from more
then one parent classes and onError handler[s] or destructor[s]
were neither defined in the class nor in the first ancestor.
* harbour/contrib/hbwin/olecore.c
+ added helper PRG functions:
__oleInvokeMethod(), __oleInvokePut(), __oleInvokeGet(),
__oleGetNameId()