Netlink API update for:
  - connection batching
  - filtering by latest activity
Also some bug fixes (variables at initialization, etc.)
pull in Andrew's modifications for DSackDups and DataOctetsOut, the fix for using v6_rcv_saddr, and ChrisR's cleanup of listconns and read_conns_vars idr/tmpid handling
fix up order of commands in tcp_estats_nl.h so that it's backwards compatible with existing user space lib, rename READ_CONNS_VARS to READ_ALL (so that previously unused command is now used), remove debugging line that was added from (private) 3.2 branch in error
minor edit for consistency
fixing minor issues - remove declaration of tcp_estats_read_connection_spec from tcp_estats_mib_var.h, and change snd_pid to snd_portid to match v3.14 field names
remove unused return val
merging changes from rapier1/web10g
add estats_CID to TCP_INFO, and clean up formatting
Merge branch 'kwabena-bruni-web10g' into test-web10g
fixed problem with invalid argument due to tmpid being off by one in genl_list_conns in tcp_estats_nl.c