* Add is_partitioned and partition to libcpp.algorithm
* Add is_sorted and is_sorted_until to libcpp.algorithm
* Add partition_copy, stable_partition, and partition_point to libcpp.algorithm
* Move tests for sort and partial_sort into cpp_stl_algo_sorting_ops, add greater to libcpp.functional
* Add partial_sort_copy to libcpp.algorithm
* Add stable_sort to libcpp.algorithm
* Add nth_element to libcpp.algorithm
* Add missing except specifiers in libcpp.algorithm