[lazarus] Property 'Lazarus' in win32 interface

[Martin Smat]

Hi,
   in win32 interface is set for every control the property with name
'Lazarus' with value=address of class instance. It seems that this
property is duplicate with properties 'Control' and 'Wincontrol' which
are set in LCL for all WinControl class. And what more, in win32 
interface is not the property 'Lazarus' used correctly. It is set for 
other objects then only HWND (e.g. for HMENU) but such objects cannot 
store properties.
   I suggest to remove this property and replace all GetProp(hwnd, 
'Lazarus') calls with GetProp(hwnd, 'Wincontrol').
   If other win32 developers will agree, I send a patch.

Martin Smat.