Changelog

*1.0 Beta5 (2013.5.7)

 nginx/script/tileserver.lua:
   - fix light thread show broker bug.
     It won't be worked in Beta4.
   - remove tirex debug command

 nginx/sites/omsfj-tileserver:
 nginx/script/osmfj_tilecheck.lua:
   - introduce japan region check of x/y/z
     it has still bug in the inclusion detection algrithm.
     known-bug::
       - polygon should be convex-polygon.
       - miss-detect with concave polygon now.

*1.0 Beta4 (2013.5.6)

 nginx/script/tileserver.lua:
   - introduce light thread 'tirex_handler'
   - integrate renderd_expire into osm-updatedb script
   - add tirex debug command

*1.0 Beta3 (2013.5.1)

 nginx/script/tileserver.lua:

 - Refactoring 
 
 - Fix udp error (#22)
   Tirex server accept duplicate requests but get away it.
   And return single response for request.
   Because tileserver wait by each, some recv() fails with timeout.
   
   Now it sometimes show timeout error, but working well.

*1.0 Beta2 (2013.4.30)

 - fix MetaTile path error. that cause the tile server totaly useless.
 - update documents
 - fix geoip logic
 - fix install scripts
 - external library now goes PPA
 - some cleanup
 
*1.0 Beta1 (2013.4.10)

 - first beta.
 - works well for tile cache server.
 - static tile replacement is also working
 - not tested for tile server.