Extracting XFF functions.
Extracting XFF functions.

The handler was getting a little to big. Before the user blocking
features get implemented this cleanup was in order.

Signed-off-by: Aaron Bedra <5a7a6a189b47cd31d24667a751e4003cd04eced5@aaronbedra.com>

repsheet/repsheet-nginx,repsheet/repsheet-nginx,davidhanley/repsheet-nginx,miccrun/repsheet-nginx,davidhanley/repsheet-nginx,repsheet/repsheet-nginx,davidhanley/repsheet-nginx,miccrun/repsheet-nginx,miccrun/repsheet-nginx