Added vmref.cpp
Added vmref.cpp

blairmcg/Dolphin,dolphinsmalltalk/DolphinVM,shoshanatech/Dolphin,dolphinsmalltalk/DolphinVM,blairmcg/Dolphin,shoshanatech/Dolphin,objectarts/DolphinVM,jgfoster/Dolphin,objectarts/Dolphin,shoshanatech/Dolphin,dolphinsmalltalk/Dolphin,dolphinsmalltalk/Dolphin,objectarts/Dolphin,shoshanatech/Dolphin,jgfoster/Dolphin,blairmcg/Dolphin,dolphinsmalltalk/Dolphin,dolphinsmalltalk/Dolphin,jgfoster/Dolphin,blairmcg/Dolphin,jgfoster/Dolphin,objectarts/DolphinVM