Backport assert and unregistration fix from recursive branch

After multiple changes, the submit should be removed as it is done after a wait, so we want to unregister the data at the moment we do it and not later.

runtime/starpu/control/runtime_descriptor.c

@@ -240,7 +240,7 @@ void RUNTIME_desc_destroy( CHAM_desc_t *desc )
             for (m = 0; m < lmt; m++)
             {
                 if ( *handle != NULL ) {
-                    starpu_data_unregister_submit(*handle);
+                    starpu_data_unregister(*handle);
                     *handle = NULL;
                 }
                 handle++;