2003-07-30  Gawain Bolton  <gp.bolton@computer.org>

	PR libstdc++/11504.
	* include/bits/stl_tree.h: Replace C-style casts with C++-style
	casts.  Changes to avoid casting away constness.  Eliminate
	_Rb_tree_base_iterator class.  Change _Rb_tree_iterator to use
	initialization lists.  Move out implementation of __black_count()
	to...
        * src/stl_tree.cc: ...here and rename _Rb_tree_black_count().
        Rename_Rb_tree_base_iterator::_M_increment() to
        _Rb_tree_increment and _Rb_tree_base_iterator::_M_decrement() to
        _Rb_tree_decrement.
        * config/linker-map.gnu: Add and change symbols here.

From-SVN: r69958