#1 Fixes a bug in PortSentryModeTCP (wrong port reported)

[David Vincent]

When not all ports can be bind()ed, PortSentryModeTCP
doesn't reports the correct destination port.
This is due to the fact that the socket index doesn't
match the ports[] array index, because there is less
sockets (open port) than assumed (ports listed in the
config file). Thus, the reported port is sometimes one
of the port preceeding the actual one in the
configuration list.

This patch uses a separate array to read the
configuration file, and fills the ports[] array only
with the ports that could be listened to.

PortSentryModeUDP and other modes could also be afected.

[David Vincent]