Fix linux build

FdbVersionedMap.cpp

@@ -1,7 +1,10 @@
 #include "Internal.h"
 #include "KeyCompare.h"
 #include "VersionedMap.h"
+
 #include <map>
+#include <math.h>
+#include <vector>
 
 // FDB implementation adapted to compile outside of FDB
 
@@ -1443,4 +1446,4 @@ int64_t VersionedMap::getBytes() const {
   // TODO
   return -1;
 }
-} // namespace weaselab
+} // namespace weaselab