std_iterator.h: Include sbuf_iter.h via std_ios.h.

std_iterator.h: Include sbuf_iter.h via std_ios.h.

2001-06-26  Benjamin Kosnik  <bkoz@redhat.com>

	* include/bits/std_iterator.h: Include sbuf_iter.h via std_ios.h.

	* include/bits/stl_iterator.h (istream_iterator): Inherit from
	iterator.
	(ostream_iterator): Same.
	* testsuite/24_iterators/istream_iterator.cc: New file.
	* testsuite/24_iterators/ostream_iterator.cc: New file.

	* include/bits/sbuf_iter.h: Remove self typedef.
	* testsuite/24_iterators/ostreambuf_iterator.cc: Add test.
	* testsuite/24_iterators/istreambuf_iterator.cc: Add test.

	* include/bits/stl_iterator.h (reverse_iterator): Remove
	extraneous typedefs. Add typename.
	(__normal_iterator): Remove typedefs referring to self. Add typename.
	(reverse_bidiretional_iterator): Remove, not longer required.

From-SVN: r43570