port r11425 from 1.1: Accept a restart on a just-created tag

src/core/dependencies/tags.c

@@ -288,7 +288,7 @@ void starpu_tag_restart(starpu_tag_t id)
 	struct _starpu_tag *tag = gettag_struct(id);
 
 	_starpu_spin_lock(&tag->lock);
-	STARPU_ASSERT_MSG(tag->state == STARPU_DONE, "Only completed tags can be restarted (%llu was %d)", (unsigned long long) id, tag->state);
+	STARPU_ASSERT_MSG(tag->state == STARPU_DONE || tag->state == STARPU_INVALID_STATE || tag->state == STARPU_ASSOCIATED || tag->state == STARPU_BLOCKED, "Only completed tags can be restarted (%llu was %d)", (unsigned long long) id, tag->state);
 	tag->state = STARPU_BLOCKED;
 	_starpu_spin_unlock(&tag->lock);
 }