Merged the 2 versions https://github.com/richp10/apache2-mod_auth_memcookie-1.0.3 and https://github.com/richp10/apache2-mod_auth_memcookie

Added an extra couple of config options:
    Auth_memCookie_RedirectURLOnFailure ... If authorisation fails then redirect to the specified url
    Auth_memCookie_AcceptPathStart ........ If authorisation fails and the path starts with the specified string, then accept the authorisation
Both of the above configuration settings can be achieved using apache config, but I was struggling to get it right,
I did eventually get it right, but have chosen to leave these options in as it makes the config simpler.
Added an extra couple of options for checking the remote IP, use Client-IP header and use X-Forwarded-For header if Client-IP header is not set
Changed the authorisation to loop through the requires, so it must match all the require directives
Authorisation will now check multiple groups and users in the require directives
Configuration is now merged if you have configuration at multiple levels
Fixed a few bugs in authorisation
I havn't checked the creation of entries within memcached as we create the entries in another application
Feels like I have done more, but I think that was down to frustration of debugging while doing other stuff, so havn't intentionally omitted any changes