Updated Makefiles and added compilation instructions to work with Enterprise
Linux (tested on CentOS 6.4 64-bit).

Init scripts and .spec files for RPM builds to follow.
First go at creating a .spec file to build mediaproxy-ng for Enterprise Linux
.spec file now builds iptables plugin. Kernel module (using DKMS) to follow.
Updated documentation for Enterprise Linux
.spec file now builds kernel module using DKMS
Updated readme for Enterprise Linux
More tidying of EL docs
Added init.d script and config file
Fixes to init.d script and .spec
Updated documentation for Enterprise Linux
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
updated to support new --log-level argument and use a new iptables chain