Update libnids to 1.24.
Based on PR pkg/48217 by Leonardo Taccari.

Changes:
v1.24 Mar 14 2010
- fixed another remotely triggerable NULL dereference in ip_fragment.c
- unofficial patch that enables tracking of already established TCP connections
- missing reset of some tcp_* variables upon nids_exit
- correct calculation of radiotap header
- compilation warning fixes with newer gcc
- use pcap_get_selectable_fd() instead of pcap_fileno()
Updated net/libnids to 1.24
Bump PKGREVISION to be built with unvulnerable libnids>=1.24.
Allow specifying multiple input files for 'pkgin import'.
Ok imil@, will be integrated upstream
Updated pkgtools/pkgin to 0.6.4nb2
fixes build on Solaris10.
PR pkg/48173 by Stefan Palm.