2004-06-23  Paolo Carlini  <pcarlini@suse.de>

	PR libstdc++/16154
	* include/bits/boost_concept_check.h (struct _TrivialIteratorConcept):
	Don't require the _DefaultConstructibleConcept.
	(struct _ForwardIteratorConcept): Require it here.

From-SVN: r83554