[DCCP] ackvec: Introduce dccp_ackvec_slab

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc net/dccp/ackvec.c
Simple merge

diff --cc net/dccp/ackvec.h
Simple merge

diff --cc net/dccp/proto.c
Simple merge