64bit fixes.

encoding2.c

@@ -459,7 +459,7 @@ static const char *layout_structure_callback(const char *type, struct objc_struc
 	}
 	else
 	{
-		round_up(&layout->record_size, align);
+		round_up((size_t*)&layout->record_size, align);
 		layout->record_size += size;
 	}
 	return end;
@@ -487,7 +487,7 @@ void objc_layout_structure_get_info (struct objc_struct_layout *layout,
 	*type = layout->type;
 	*offset = layout->record_size / 8;
 	*align= layout->record_align / 8;
-	round_up(offset, *align);
+	round_up((size_t*)offset, (size_t)*align);
 	printf("%s %d %d\n", *type, *offset, *align);
 }