Merge pull request #2 from crocodilertc/master

Enterprise Linux (CentOS|Red Hat) support
change port range defaults to match docs
merge bencode fix from kamailio source
fix incorrect source address of STUN binding responses
Make mediaproxy use a new iptables chain

Prevent conflicts with iptables flushing
firewall solutions
added --log-level option and USR1 and USR2 signals to update log level on the fly
added log level handling to debian default file and init script

- fixed indentation in main.c
update init script to handle ipv6 tables properly
enforce stream correlation against same-numbered old streams

fixes port mixups in case of one rejected stream (zero port) when
using UDP protocol