Various minor slice iterator cleanups#51326

Merged

bors merged 3 commits intorust-lang:masterfrom

sdroege:slice-iter-cleanup

Jun 4, 2018

Commits on Jun 3, 2018

Move TrustedLen and FusedIterator impl of Iter/IterMut into macro
sdroege
committed
Remove mention of Slice/SliceMut traits from IterMut documentation
sdroege
committed
Implement TrustedLen for Windows and the 4 Chunks iterators
sdroege
committed