-  added  tests for  the following  cases:
   * TBtree with std::for_each (Full iteration: from the Begin up to the End)
   * TBtree with std::find_if
   * TBtree with std::count_if
   * TOrdCollection with std::for_each (Full iteration: from the Begin
     up to the End)
   * TOrdCollection with std::find_if
   * TOrdCollection with std::count_if
   * TRefArray with std::for_each (Full iteration: from the Begin up to the End)
   * TRefArray with std::find_if
   * TRefArray with std::count_if


git-svn-id: http://root.cern.ch/svn/root/trunk@23532 27541ba8-7e3a-0410-8455-c3a389f83636