[a4494e28ed] Use flag bit instead of NULL pointer to suppress teardown list of
imported commands when the original command gets re-created.  This prevents the
panic otherwise possible when the invalid state represented by the NULL pointer
is encountered during a command delete trace.
Change the flag value to avoid merge conflict with trunk.
[a4494e28ed] Use flag bit instead of NULL pointer to suppress
              teardown list of imported commands when the original command
              gets re-created. This prevents the panic otherwise possible when
              the invalid state represented by the NULL pointer is encountered
              during a command delete trace.