* src/common/hbver.c
* include/hbapi.h
+ Added hb_iswinvista() to detect Vista and newer Windows versions.
* src/rtl/version.c
* include/hbextern.ch
+ Added HB_OSISWINVISTA() .prg level function with above meaning.
* contrib/hbwin/win_os.prg
% Changed to use HB_OSISWINVISTA() instead of hbwin specific
WIN_OSISVISTAORUPPER().