[6/*] [IPSEC] Add xfrm_userpolicy_delete for xfrm_user notification

[Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>]

Hi:

This patch changes the format of the XFRM_MSG_DELPOLICY notification
so that we don't lose the byid information carried in km_event.

Since this user interface is introduced by Jamal's patch we can still
afford to change it.

I know that this is a bit trivial but as it is the information carried
in xfrm_user's notifications is a strict superset of that of af_key
and I'd like to keep it that way :)
 
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

xfrm-event-6
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