cons_overflow_neg.cc: Avoid -Wall warnings.

cons_overflow_neg.cc: Avoid -Wall warnings.

2010-08-10  Paolo Carlini  <paolo.carlini@oracle.com>

	* testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Avoid -Wall
	warnings.

	* include/bits/shared_ptr.h (shared_ptr<>::shared_ptr
	(const shared_ptr<>&), shared_ptr(shared_ptr<>&&), weak_ptr<>::
	weak_ptr(const weak_ptr<>&), weak_ptr(const shared_ptr<>&)):
	Constrain appropriately via std::is_convertible, etc.
	* include/bits/shared_ptr_base.h: Likewise.
	* include/bits/unique_ptr.h (default_delete<>::
	default_delete(const default_delete<>&),
	unique_ptr<>::unique_ptr(unique_ptr<>&&), operator=(unique_ptr<>&&)):
	Likewise.

	* testsuite/20_util/weak_ptr/comparison/cmp_neg.cc: Adjust dg-error
	line numbers.
	* testsuite/20_util/shared_ptr/cons/43820.cc: Likewise.

	* include/bits/unique_ptr.h (unique_ptr<>::unique_ptr(auto_ptr<>&&)):
	Add.
	* include/std/memory: Adjust includes order.
	* testsuite/20_util/unique_ptr/cons/auto_ptr.cc: New.
	* testsuite/20_util/unique_ptr/cons/auto_ptr_neg.cc: Likewise.
	* testsuite/20_util/shared_ptr/cons/auto_ptr_neg.cc: Minor tweaks.

From-SVN: r163053