* for includes from other modules use <> instead of "", i.e.
  <boost/ptr_container/ptr_vector.hpp>
* use size_t instead of int for container positions and count
* no need for DeleteAndDestroy(), in fact delete p followed by
  ptr_vector::erase() attempted to delete the instance twice and would crash
* adapted places that accessed DeleteAndDestroy() to operate on the vector
  instead
  * introduced GetDataVector() for that
* changed the DeleteOnTab() loop that used DeleteAndDestroy() to properly
  iterate over the container instead
* changed UpdateReference() to a loop using iterator
* changed operator==() to use size_t instead of sal_uInt16
  * note aside: mixing sal_uInt16 with a container's size isn't a good idea
* adapted places that access Count() and GetObject() to use size_t instead of
  sal_uInt16
* made GetObject() const and return const ScDetOpData*
* changed indentation to 4 spaces per level