* harbour/include/hbapi.h
* harbour/src/vm/garbage.c
* added emulation for hb_gcAlloc() function covered by HB_LEGACY_LEVEL2
It will be removed in the future but now it gives a time for 3-rd party
code developers to updated existing code and switch to hb_gcAllocate()
* harbour/contrib/hbwin/hbwinole.h
* harbour/contrib/hbwin/olecore.c
+ added hb_oleItemGetCallBack() and hb_oleItemSetCallBack()
functions and support for user defined items bound with
OLE GC pointer item
* harbour/contrib/hbwin/axcore.c
* bound callback function with OLE item so it will be automatically
released with OLE object
* harbour/contrib/hbwin/tests/testax.prg
! destroy window
* enabled destructor
So far MS-Windows users haven't defined expected behavior for OLE code
so I took my own arbitrary decision and bound callback with OLE GC item.
When last copy of this item is cleared then callback is unregistered
and freed. It means that it can happen before AX window is closed.
If you prefer different behavior then please clearly define what
you need and I can try to change existing code.
Now testax.prg should cleanly execute without any GPF traps and
resource leaks.
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