Brooks Davis 34a77b9741 Move uio enums to sys/_uio.h.
Include _uio.h instead of uio.h in several headers to reduce header
polution.

Fix a few places that relied on header polution to get the uio.h header.

I have not moved struct uio as many more things that use it rely on
header polution to get other definitions from uio.h.

Reviewed by:	cem, kib, markj
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D14811
2018-03-27 15:20:03 +00:00
..
2018-03-27 15:20:03 +00:00