stl_algo.h (is_sorted, [...]): Add.

stl_algo.h (is_sorted, [...]): Add.

2007-10-14  Paolo Carlini  <pcarlini@suse.de>

	* include/bits/stl_algo.h (is_sorted, is_sorted_until): Add.
	* include/bits/algorithmfwd.h: Add.
	* include/ext/algorithm: Adjust.
	* testsuite/25_algorithms/is_sorted/requirements/
	explicit_instantiation/2.cc: New.
	* testsuite/25_algorithms/is_sorted/requirements/
	explicit_instantiation/pod.cc: Likewise.
	* testsuite/25_algorithms/is_sorted/1.cc: Likewise.
	* testsuite/25_algorithms/is_sorted_until/requirements/
	explicit_instantiation/2.cc: Likewise.
	* testsuite/25_algorithms/is_sorted_until/requirements/
	explicit_instantiation/pod.cc: Likewise.
	* testsuite/25_algorithms/is_sorted_until/1.cc: Likewise.
	* testsuite/25_algorithms/headers/algorithm/synopsis.cc:
	Add is_sorted and is_sorted_until.

	* include/bits/stl_heap.h (is_heap_until): Add concept and
	debug-mode checks.

From-SVN: r129303