Big Position renaming

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>

src/uci.cpp

@@ -113,7 +113,7 @@ void uci_loop(const string& args) {
           pos.print();
 
       else if (token == "flip")
-          pos.flip_me();
+          pos.flip();
 
       else if (token == "eval")
           cout << Eval::trace(pos) << endl;