Prefix all the vxlan ifconfig commands so they are unique

And rehook ifvxlan back into the build.
MFV r275844:

Fix unbound remote denial of service vulnerability.

Security:	FreeBSD-SA-14:30.unbound
Security:	CVE-2014-8602
Adjust printf format specifiers for dev_t and ino_t in user space.

ino_t and dev_t are about to become uint64_t.

Reviewed by:	kib, mckusick
Adjust printf format specifiers for dev_t and ino_t in kernel.

ino_t and dev_t are about to become uint64_t.

Reviewed by:	kib, mckusick
Initilize the msg_flags field consistently in all code paths.

Reported by:	Coverity
CID:		1018726
Use memory regions information provided in FDT.

Reviewed by:	brooks
Sponsored by:	DARPA, AFRL
o Add PIO[2,3] devices information
o Enable Virtio Block
Move memory node to the root, so fdt_get_mem_regions() can find it.
Add configuration files for BERI soft-core synthesized on
Terasic SoCKit board (Altera FPGA).

Use virtio block as root filesystem device.

Sponsored by:	DARPA, AFRL
Merge remote-tracking branch 'freebsd/master' into hardened/current/master

Conflicts:
	sys/compat/svr4/svr4_socket.c (fixed)

Signed-off-by: Oliver Pinter <oliver.pntr@gmail.com>
Do not strip all when stripping an explicit symbol

When requested to strip specific symbols (-N flag) the default should be
to strip nothing (other than the requested symbols). This is consistent
with binutils strip(1).

PR:		196038
Reviewed by:	imp
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D1327
Make sequence numbers checks more strict.

While we don't support MCS, hole in received sequence numbers may mean
only PDU loss.  While we don't support lost PDU recovery, terminate the
connection to avoid stuck commands.

While there, improve handling of sequence numbers wrap after 2^32 PDUs.

MFC after:	2 weeks
Merge remote-tracking branch 'freebsd/master' into hardened/current/master
Merge remote-tracking branch 'origin/hardened/current/master' into hardened/current/userlandenhanced