fix extra quote from struct tag
remove gz loader support -- our files are uncompressed
Remove Len/Less/Swap since we don't need to sort ipRanges any more
ipRange files are now both headerless csv -- remove config options
move comment to cover the entire block
move assignment of prevIP closer to where it's used
deadComments--
Cleanup lookupHander

This patch moves variable declaration, assignment, and use closer
together for the different bits of the response.  This ends up reducing
scope for many of the parts.