Display three extra NFSv4 client counters that are already exposed
in /proc/net/rpc/nfs: GETACL, SETACL, and FS_LOCATIONS. Won't cause
trouble on older kernels that might lack those counters.
Signed-off-by: David M. Richter <richterd@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de>