scvm: object: Replace the flags field with parent_state

This field is for objects that have a parent object, to indicate the
state that the parent should be into for the object to exists.

scvm.h

@@ -125,7 +125,7 @@ struct scvm_object {
   unsigned num_hotspot;
   int* hotspot;
   scvm_image_t* image;
-  unsigned flags;
+  unsigned parent_state;
   scvm_object_t* parent;
   unsigned actor_dir;
   unsigned* verb_entries;

scvm_res.c

@@ -353,7 +353,7 @@ scvm_object_t* scvm_load_obcd(scvm_t* vm, scc_fd_t* fd) {
     obj->height = scc_fd_r16le(fd);
   } else
     scc_fd_seek(fd,8,SEEK_CUR);
-  obj->flags = scc_fd_r8(fd);
+  obj->parent_state = scc_fd_r8(fd);
   // hack, the real pointer get resolved when all
   // object are loaded.
   obj->parent = (scvm_object_t*)((intptr_t)scc_fd_r8(fd));