Add rstl::binary_find

Including CAnimData::GetBoundingBox


Former-commit-id: e4a864880b

include/rstl/pair.hpp

@@ -15,6 +15,20 @@ public:
   L first;
   R second;
 };
+
+template < typename P >
+struct select1st {
+  const P& operator()(const P& it) const { return it; }
+};
+
+template < typename K, typename V >
+struct select1st< pair< K, V > > {
+  typedef K value_type;
+
+  const K& operator()(const pair< K, V >& it) const { return it.first; }
+};
+
+
 } // namespace rstl
 
 #endif // _RSTL_PAIR