Add (void*) casts to memcpy/memset invocations to appease GCC 8.

A lot of these classes are not *technically* "trivially copyable"
for one reason or another, but in all of these cases it seems
OK to me to use memcpy/memset on them. Adding a cast to void*
tells GCC that "I know what I'm doing here" and shuts up the
warning.

headers/private/debugger/types/ValueLocation.h

@@ -72,7 +72,7 @@ struct ValuePieceLocation {
 
 	bool Copy(const ValuePieceLocation& other)
 	{
-		memcpy(this, &other, sizeof(ValuePieceLocation));
+		memcpy((void*)this, (void*)&other, sizeof(ValuePieceLocation));
 		if (type == VALUE_PIECE_LOCATION_IMPLICIT) {
 			void* tempValue = malloc(size);
 			if (tempValue == NULL) {