Rescale UCI scores to PawnValueEg

This is more consistent with what other engines are doing.
Often people thinks that SF's scores are overblown. In the
end, it just boils down to the arbitrary way of rescaling them.

No functional change.

src/notation.cpp

@@ -43,7 +43,7 @@ string score_to_uci(Value v, Value alpha, Value beta) {
   stringstream ss;
 
   if (abs(v) < VALUE_MATE_IN_MAX_PLY)
-      ss << "cp " << v * 100 / int(PawnValueMg);
+      ss << "cp " << v * 100 / int(PawnValueEg);
   else
       ss << "mate " << (v > 0 ? VALUE_MATE - v + 1 : -VALUE_MATE - v) / 2;
 
@@ -207,7 +207,7 @@ static string format(Value v) {
       ss << "-#" << (VALUE_MATE + v) / 2;
 
   else
-      ss << setprecision(2) << fixed << showpos << double(v) / PawnValueMg;
+      ss << setprecision(2) << fixed << showpos << double(v) / PawnValueEg;
 
   return ss.str();
 }