Rework of RNG to use C++11 random. Should work correctly maintaining parallel RNG across

a machine. If a "fixedSeed" is used, randoms should be reproducible across different machine
decomposition since the generators are physically indexed and assigned in lexico ordering.

lib/lattice/Grid_lattice_conformable.h

@@ -9,6 +9,10 @@ namespace Grid {
         assert(lhs._grid == rhs._grid);
         assert(lhs.checkerboard == rhs.checkerboard);
     }
+    void inline conformable(const GridBase *lhs,GridBase *rhs)
+    {
+        assert(lhs == rhs);
+    }
 
 }
 #endif