netstat: optional -p support by L. Gabriel Somlo <somlo AT cmu.edu>

netstat: optional -p support by L. Gabriel Somlo <somlo AT cmu.edu>

Without FEATURE_NETSTAT_PRG:
function                                             old     new   delta
recursive_action                                     416     425      +9
tcp_do_one                                           420     428      +8
udp_do_one                                           492     499      +7
raw_do_one                                           472     479      +7
expand                                              1697    1701      +4
netstat_main                                         489     492      +3
unix_do_one                                          486     488      +2
flags                                                  1       -      -1
qgravechar                                           109     106      -3
net_conn_line                                          4       -      -4
bbunpack                                             391     383      -8
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 7/2 up/down: 40/-16)             Total: 24 bytes

With FEATURE_NETSTAT_PRG:
file_act                                               -     213    +213
dir_act                                                -     192    +192
netstat_main                                         489     601    +112
prg_cache_get                                          -      50     +50
tcp_do_one                                           420     462     +42
udp_do_one                                           492     533     +41
raw_do_one                                           472     513     +41
unix_do_one                                          486     519     +33
recursive_action                                     416     425      +9
expand                                              1697    1701      +4
flags                                                  1       -      -1
qgravechar                                           109     106      -3
net_conn_line                                          4       -      -4
bbunpack                                             391     383      -8
packed_usage                                       24586   24572     -14
------------------------------------------------------------------------------
(add/remove: 3/2 grow/shrink: 7/3 up/down: 737/-30)           Total: 707 bytes