Download Unreal3.6.7
Unpack

./Config
No -- Anti Spoofing
Your Directory
Your Unreal Binary
leaf
hostname
0600
Yes -- SSL
Path to SSL
No -- IPV6
Yes -- Ziplinks
Path to zlib
No -- Remote includes
YES -- Chanowner/chanadmin
5 -- listen backlog
2000 -- nickname history
3000000 -- Max sendq
18 -- Buffer pools
1024 -- sockets
[ENTER] -- No extra options

Edit include/struct.h -- Search for "nickleng" and change the value to 15; change "topiclen" to 400
Run 'make clean'
Run 'make'