[PATCH v4 1/2] stdlib: Add internal stdc_rotate_right implementation

[Collin Funk]

Adhemerval Zanella Netto <adhemerval.zanella@linaro.org> writes:

> Could we work to make it a subsequent patch? I will add on my backlog to
> a proper stdc_rotate_right and stdc_rotate_left.  I will like to focus
> on fts issues first.

Sounds reasonable to me. I'll review these 2 patches later today, just
to make sure I didn't miss anything last time I looked.

Collin