* harbour/source/rtl/hbgtcore.c
* removed unnecessary variable
* harbour/contrib/hbw32/w32_ole.c
* harbour/contrib/hbole/ole2.c
* harbour/contrib/gtwvg/gtwvg.h
! use trick with HB_ID_REF() only for BCC and MSVC
some other C++ compilers like OpenWatcom have different
header files and does not need it.