2003-12-04  Paolo Carlini  <pcarlini@suse.de>

	PR libstdc++/12653
	* include/std/std_bitset.h (operator>>): Implement resolution
	of DR 303 [WP]: use widen('0') and widen('1').
	* docs/html/ext/howto.html: Add an entry for DR 303.

	* include/std/std_bitset.h (operator>>): Implement the common
	requirements of formatted input functions (27.6.1.2.1).

	* include/std/std_bitset.h (operator>>): Set the failbit when
	nothing was extracted and _Nb != 0.
	* testsuite/23_containers/bitset/input/1.cc: New.

From-SVN: r74276