udate: lkf sample
windows supoort
update
1. delete nonsense headers
update
1. support multi platform (gcc, vc, mingw) in i/o function
2. support multi platform (gcc, vc, mingw) in math round function and defined math value
update
1. modify lkf name, lkf to lssmap(laser scan statistics map)
2. split to lssmap-base and lssmap-optimize
update
1. apply warning in gnd-lssmap-base.hpp
2. fix gnd-random.hpp to apply multi platform