Retire move.h

Also some assorted comments fixes and other trivia.

No functional change.

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

src/position.h

@@ -23,20 +23,20 @@
 #include <cassert>
 
 #include "bitboard.h"
-#include "move.h"
 #include "types.h"
 
 
 /// The checkInfo struct is initialized at c'tor time and keeps info used
 /// to detect if a move gives check.
+class Position;
 
 struct CheckInfo {
 
-    explicit CheckInfo(const Position&);
+  explicit CheckInfo(const Position&);
 
-    Bitboard dcCandidates;
-    Bitboard pinned;
-    Bitboard checkSq[8];
+  Bitboard dcCandidates;
+  Bitboard pinned;
+  Bitboard checkSq[8];
 };
 
 
@@ -44,7 +44,6 @@ struct CheckInfo {
 /// object to its previous state when we retract a move. Whenever a move
 /// is made on the board (by calling Position::do_move), an StateInfo object
 /// must be passed as a parameter.
-class Position;
 
 struct StateInfo {
   Key pawnKey, materialKey;