Improved the gamma quite a bit.

Serial rng's which are set on node zero and broadcaste

tests/Grid_main.cc

@@ -57,7 +57,8 @@ int main (int argc, char ** argv)
     
     GridCartesian Fine(latt_size,simd_layout,mpi_layout);
     GridRedBlackCartesian rbFine(latt_size,simd_layout,mpi_layout);
-    GridRNG       FineRNG(&Fine);
+    GridParallelRNG       FineRNG(&Fine);
+    FineRNG.SeedRandomDevice();
 
     LatticeColourMatrix Foo(&Fine);
     LatticeColourMatrix Bar(&Fine);