Move struct RootMove to Search namespace

And directly pass RootMoves instead of SearchMoves
to main thread. A class declaration is better suited
in a header and slims a bit the fatty search.cpp

No functional change.

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

src/benchmark.cpp

@@ -19,7 +19,6 @@
 
 #include <fstream>
 #include <iostream>
-#include <set>
 #include <vector>
 
 #include "misc.h"
@@ -29,7 +28,6 @@
 #include "ucioption.h"
 
 using namespace std;
-using namespace Search;
 
 static const char* Defaults[] = {
   "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",
@@ -62,7 +60,7 @@ static const char* Defaults[] = {
 void benchmark(int argc, char* argv[]) {
 
   vector<string> fens;
-  LimitsType limits;
+  Search::LimitsType limits;
   int time;
   int64_t nodes = 0;
 
@@ -116,14 +114,14 @@ void benchmark(int argc, char* argv[]) {
 
       if (valType == "perft")
       {
-          int64_t cnt = perft(pos, limits.maxDepth * ONE_PLY);
+          int64_t cnt = Search::perft(pos, limits.maxDepth * ONE_PLY);
           cerr << "\nPerft " << limits.maxDepth  << " leaf nodes: " << cnt << endl;
           nodes += cnt;
       }
       else
       {
-          Threads.start_thinking(pos, limits, set<Move>(), false);
-          nodes += RootPosition.nodes_searched();
+          Threads.start_thinking(pos, limits);
+          nodes += Search::RootPosition.nodes_searched();
       }
   }