* companion: RegionMap now used in Datastore

* companion: new CMD_SET_DEFAULT_FLOOD_SCOPE
* support for regional builds with DEFAULT_REGION_SCOPE

src/helpers/RegionMap.h

@@ -52,6 +52,7 @@ public:
   const RegionEntry* getByIdx(int i) const { return &regions[i]; }
   const RegionEntry* getRoot() const { return &wildcard; }
   int exportNamesTo(char *dest, int max_len, uint8_t mask, bool invert = false);
+  int getTransportKeysFor(const RegionEntry& src, TransportKey dest[], int max_num);
 
   void    exportTo(Stream& out) const;
   size_t  exportTo(char *dest, size_t max_len) const;