Fix all header defines

src/checkqueue.h

@@ -2,8 +2,8 @@
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#ifndef CHECKQUEUE_H
-#define CHECKQUEUE_H
+#ifndef BITCOIN_CHECKQUEUE_H
+#define BITCOIN_CHECKQUEUE_H
 
 #include <algorithm>
 #include <vector>
@@ -204,4 +204,4 @@ public:
     }
 };
 
-#endif // CHECKQUEUE_H
+#endif // BITCOIN_CHECKQUEUE_H