Set the pre-recalled flag for deleg reclaims.

This flag will be set for reclaim opens when for the delegation would not be
granted for non-reclaim opens.

Signed-off-by: Srikrishan Malik <srimalik@in.ibm.com>
Added more cases for pre-recall flag.

If the admin disables delegations and restarts ganesha ganesha will allow
reclaim of the delegations but will set the pre-recall flag so that the client
returns it quickly.

Signed-off-by: Srikrishan Malik <srimalik@in.ibm.com>