Persist vdev_resilver_txg changes to avoid panic caused by validation
vs a vdev_resilver_txg value from a previous resilver.

MFC after:	1 week
Add Reset Manager driver. This driver provides generic way to reset
and provides sysctl tunables for enable/disable FPGA<->HPS bridges.

Sponsored by:	DARPA, AFRL
Merge upstream Clang rev 205331 debuginfo crash fix:

    Debug info: fix a crash when emitting IndirectFieldDecls, which were
    previously not handled at all.
    rdar://problem/16348575

MFC after:	1 week
Sponsored by:	DARPA, AFRL
Add clang patch corresponding to r271432
Update motd, clarifying the information and adding pointers to other
resources.

MFC after:	3 days
Fix typo.

MFC after:	3 days
Sponsored by:	The FreeBSD Foundation
Don't blindly assume the target agreed to transition to Full Feature Phase;
if we got a Login Response PDU without the "T" bit set, try again with
an empty request.  This fixes interoperability with COMSTAR.

Reviewed by:	mav@
Tested by:	mav@
MFC after:	1 week
Revisions 264905 and 266860 added a "int fib" argument to ifa_ifwithnet and
ifa_ifwithdstaddr. For the sake of backwards compatibility, the new
arguments were added to new functions named ifa_ifwithnet_fib and
ifa_ifwithdstaddr_fib, while the old functions became wrappers around the
new ones that passed RT_ALL_FIBS for the fib argument. However, the
backwards compatibility is not desired for FreeBSD 11, because there are
numerous other incompatible changes to the ifnet(9) API. We therefore
decided to remove it from head but leave it in place for stable/9 and
stable/10. In addition, this commit adds the fib argument to
ifa_ifwithbroadaddr for consistency's sake.

sys/sys/param.h
	Increment __FreeBSD_version

sys/net/if.c
sys/net/if_var.h
sys/net/route.c
	Add fibnum argument to ifa_ifwithbroadaddr, and remove the _fib
	versions of ifa_ifwithdstaddr, ifa_ifwithnet, and ifa_ifwithroute.

sys/net/route.c
sys/net/rtsock.c
sys/netinet/in_pcb.c
sys/netinet/ip_options.c
sys/netinet/ip_output.c
sys/netinet6/nd6.c
	Fixup calls of modified functions.

share/man/man9/ifnet.9
	Document changed API.

CR:		https://reviews.freebsd.org/D458
MFC after:	Never
Sponsored by:	Spectra Logic
Initialize 'bc_rdonly' to the right value.

Note that independent of this change a readonly disk file would still be
opened O_RDONLY and protected from writes by the guest.

Reviewed by:	grehan