added int128 / "hge" support in gdk/gdk_calc.c (except multiplication)
added int128 / "hge" support in gdk/gdk_calc.c (except multiplication)

multiplication still needs to be done,
updating the existing use of type __int128 accordingly

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb