message: fix TinyHydro cout<< compilation error with Map
diff: // 2D vector for XY geometry
  // Fri Nov 21 10:50:53 PST 2014
  #include <math.h>
  +#include <iostream>
  #ifndef _VECTORXY_H
  #define _VECTORXY_H 1
  @@ -149,8 +150,8 @@ namespace tinyHydro {
  }
  -
  -
  } // end namespace tinyHydro
  +std::ostream& operator<<(std::ostream& os, const tinyHydro::VectorXY & vec);
  +
  #endif
  