2011-03-09  Paolo Carlini  <paolo.carlini@oracle.com>

	* testsuite/util/testsuite_rvalref.h: Minor tweaks.

2011-03-09  Jonathan Wakely  <redi@gcc.gnu.org>
	    Chris Jefferson  <chris@bubblescope.net>
	    Paolo Carlini  <paolo.carlini@oracle.com>

	* testsuite/util/testsuite_rvalref.h (rvalstruct_compare_by_value):
	New.
	* testsuite/25_algorithms/sort_heap/check_compare_by_value.cc:
	Likewise.
	* testsuite/25_algorithms/partial_sort/check_compare_by_value:
	Likewise.
	* testsuite/25_algorithms/stable_sort/check_compare_by_value.cc:
	Likewise.
	* testsuite/25_algorithms/sort/check_compare_by_value: Likewise.

2011-03-09  Chris Jefferson  <chris@bubblescope.net>

	PR libstdc++/48038
	* include/bits/stl_algo.h (__merge_backward): Rename to
	__move_merge_backward and change to always move rather than copy.
	(__move_merge): New function similar to std::merge except values
	are moved instead of copied.
	(__merge_adaptive, __merge_sort_loop): Change from using std::merge
	and __merge_backward to __move_merge and __move_merge_backward.

From-SVN: r170827