Wide bench coverage

Add tests for:

- Positions with move list
- Chess960 positions

Now bench covers almost all cases, only few endgames
are still out of reach (verified with lcov)

It is a non functionality patch, but bench
changed because we added new test positions.

bench: 5479946

src/uci.cpp

@@ -35,7 +35,7 @@
 
 using namespace std;
 
-extern std::vector<string> setup_bench(const Position&, istream&);
+extern vector<string> setup_bench(const Position&, istream&);
 
 namespace {