MFV r275537:

Illumos issue:
   5316 allow smbadm join to use RPC

(Due to our lack of smbsrv this is mostly no-op on
FreeBSD)

MFC after:	2 weeks
Prefer setvbuf() to setlinebuf().

On FreeBSD's libc setlinebuf is a wrapper to setvbuf anyways.

Obtained from:	OpenBSD
MFC after:	5 days
Small space changes

Mostly to keep in sync with OpenBSD and update the TAG.

Obtained from:	OpenBSD
MFC after:	5 days
Fix buffer overflow in Marvell PCI/PCIe driver

Buffer overflow occured when more than one MSI was allocated.

Submitted by:    Wojciech Macek <wma@semihalf.com>
Obtained from:   Semihalf
Fix mrc and mrc2 with APSR_nzcv. Binutils encodes it internally as 0 where
we need it to be set to 15 for it to be equivalent to r15.

MFC after:	1 week
X-MFC with:	r275415
Sponsored by:	ABT Systems Ltd
Merge remote-tracking branch 'freebsd/master' into hardened/current/master
Merge remote-tracking branch 'origin/hardened/current/master' into hardened/current/segvguard