[Freeciv-Dev] (PR#7279) Macro optimizations

["Marcelo Burda" <mburda@xxxxxxxxx>]

<URL: http://rt.freeciv.org/Ticket/Display.html?id=7279 >

Hi,
I am working in Extending and Optimizing normalize_map_pos, see(#7287), 
plz not touch it!, you can mod is_normal_map_pos if you like
i make big change to the city_map_to_map() function family  and all code 
using its ! plz not touch it too!

i use pointer to function to implement normalize_map_pos, this alow to 
make optimized function to differents topologies, macro or inline 
function are too limited.

this patch include some mapgen code too and a rewrited overview this is 
a litle long sorry.

Marcelo