+route optimiser
+ - strange results from
+ ./routesearch 13460 20210 -1 0 search 30 7 >u
+ ie
+ absolute 18423.760221** perleague 449.360005** route 7 5 7 5 7 5 7 5 7 5 7
+ but routetrade disagrees violently
+
+ - make debugging optional
+ - fast version of rsvalue.c ?
+ - performance improvements
+
+create index sell_by_islandonly on sell (islandid, commodid, price);
+
+
+