am 0da2a8eb: am af00228b: Revert "libc: memmove(): non-overlapping block optim."

Merge commit '0da2a8eb8728395867ec8a669e0aee2f243113db'

* commit '0da2a8eb8728395867ec8a669e0aee2f243113db':
  Revert "libc: memmove(): non-overlapping block optim."