Function swap

libs/base/buffer_vector.hpp:420–423

template <class T, size_t N>
void swap(buffer_vector<T, N> & r1, buffer_vector<T, N> & r2)
{
  r1.swap(r2);
}

template <typename T, size_t N>
std::string DebugPrint(buffer_vector<T, N> const & v)