WIP: Code for CB_GETATTR
bugfix: use the correct client file entry in recall.

Signed-off-by: Srikrishan Malik <srimalik@in.ibm.com>
bugfix: Process only regular files

Signed-off-by: Srikrishan Malik <srimalik@in.ibm.com>
Enh: pass found_entry in callback args
bugfix: use deleg_list instead of lock_list for delegations.

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