[PATCH] Cleanup algorithm implementations

[Jonathan Wakely]

On 19/04/19 11:59 -0700, Thomas Rodgers wrote:
>	* include/pstl/glue_algorithm_impl.h (stable_sort): Forward
>        execution policy.
>	(mismatch): Forward execution policy.
>	(equal): Qualify call to std::equal().
>	(partial_sort): Forward execution policy.
>	(inplace_merge): Forward execution policy.

OK for trunk, thanks.