New Netflow Collector

Release Notes: In this version, non-blocking support was improved in the Postgres module, but it is still not working. More correct error checking was added in postgres.c in PQexec(), a megabit module was added as a sample for netflow processing, and a small bug was fixed when parsing IP parameters in nnfc.cfg.

Release Notes: The -a command line parameter and arcdir option were removed. The configure script now searches for PostgreSQL, and a PostgreSQL module was added. Two functions were added to nnfc_module, a module_open() function was added, and the mthread() and mcleanup() functions were removed. A reader.c file for working with packet queues was added, thread.c was removed, and packet receiving was rewritten.