Stub out COM marshaling API references on Unix
Stub out COM marshaling API references on Unix

yizhang82/corert,yizhang82/corert,gregkalapos/corert,tijoytom/corert,tijoytom/corert,gregkalapos/corert,krytarowski/corert,sandreenko/corert,sandreenko/corert,shrah/corert,sandreenko/corert,gregkalapos/corert,sandreenko/corert,tijoytom/corert,botaberg/corert,tijoytom/corert,shrah/corert,botaberg/corert,krytarowski/corert,krytarowski/corert,yizhang82/corert,yizhang82/corert,botaberg/corert,shrah/corert,shrah/corert,krytarowski/corert,gregkalapos/corert,botaberg/corert