Fix build with spaces in names.

PR: 162736
Make pcengines config files compile again.
With the more generous footprints today, it makes little sense to use
UFS1 by default any more. Switch to UFS2.
Print an error message when we exit out early.

PR: 136889
Submitted by: Aragon Gouveia
When NANO_IMAGE_MBRONLY is set, and we're backing via swap, only copy
the MBR.

PR: 136889
Submitted by: Aragon Gouveia
NanoBSD has a utility shell script called save_cfg which helps keep
/cfg updated with the modified configuration files in /etc. I have
written an improved version with the following features:

* Recurses directories.
* Only requires file arguments the first time the file/directory is
* added to /cfg.
* Handles file deletions.

PR: 145962, 157533
Submitted by: Aragon Gouveia and Alex Bakhtin
Be more explicit about setting SRCCONF to /dev/null (plus allow it to
be overridden).

PR: 160443
Submitted by: Garrett Cooper
libusb: add libusb_log_level enum

This is documented on http://libusb.sourceforge.net/api-1.0/group__lib.html
Rely on default UFS type (though this is unlikely to change).

Submitted by: eadler
Remove TARGET_BIG_ENDIAN. It's no longer relevant.
Fix an issue with ktrdump(8) where it would not print all entries in the
KTR buffer.

This happens when 'i' tries to wrap around from 0 to 'entries - 1'. Since 'i'
is a signed integer the modulo operation actually returns a negative number.

Fix this by computing the next index to use "by hand" instead of relying
on the modulo operator.
sh: Add some consts.
Don't dump entries that were modified during the time the KTR buffer was being
copied to userspace. Failing to do this would result in entries at the bottom
of the ktrdump output to be more recent than entries at the top.

With this change the timestamps are monotonically decreasing going from the
top to the bottom of the ktrdump output.
Several years after initial development, merge prototype support for
linking NIC Receive Side Scaling (RSS) to the network stack's
connection-group implementation.  This prototype (and derived patches)
are in use at Juniper and several other FreeBSD-using companies, so
despite some reservations about its maturity, merge the patch to the
base tree so that it can be iteratively refined in collaboration rather
than maintained as a set of gradually diverging patch sets.

(1) Merge a software implementation of the Toeplitz hash specified in
    RSS implemented by David Malone.  This is used to allow suitable
    pcbgroup placement of connections before the first packet is
    received from the NIC.  Software hashing is generally avoided,
    however, due to high cost of the hash on general-purpose CPUs.

(2) In in_rss.c, maintain authoritative versions of RSS state intended
    to be pushed to each NIC, including keying material, hash
    algorithm/ configuration, and buckets.  Provide software-facing
    interfaces to hash 2- and 4-tuples for IPv4 and IPv6 using both
    the RSS standardised Toeplitz and a 'naive' variation with a hash
    efficient in software but with poor distribution properties.
    Implement rss_m2cpuid()to be used by netisr and other load
    balancing code to look up the CPU on which an mbuf should be
    processed.

(3) In the Ethernet link layer, allow netisr distribution using RSS as
    a source of policy as an alternative to source ordering; continue
    to default to direct dispatch (i.e., don't try and requeue packets
    for processing on the 'right' CPU if they arrive in a directly
    dispatchable context).

(4) Allow RSS to control tuning of connection groups in order to align
    groups with RSS buckets.  If a packet arrives on a protocol using
    connection groups, and contains a suitable hardware-generated
    hash, use that hash value to select the connection group for pcb
    lookup for both IPv4 and IPv6.  If no hardware-generated Toeplitz
    hash is available, we fall back on regular PCB lookup risking
    contention rather than pay the cost of Toeplitz in software --
    this is a less scalable but, at my last measurement, faster
    approach.  As core counts go up, we may want to revise this
    strategy despite CPU overhead.

Where device drivers suitably configure NICs, and connection groups /
RSS are enabled, this should avoid both lock and line contention during
connection lookup for TCP.  This commit does not modify any device
drivers to tune device RSS configuration to the global RSS
configuration; patches are in circulation to do this for at least
Chelsio T3 and Intel 1G/10G drivers.  Currently, the KPI for device
drivers is not particularly robust, nor aware of more advanced features
such as runtime reconfiguration/rebalancing.  This will hopefully prove
a useful starting point for refinement.

No MFC is scheduled as we will first want to nail down a more mature
and maintainable KPI/KBI for device drivers.

Sponsored by:   Juniper Networks (original work)
Sponsored by:   EMC/Isilon (patch update and merge)
Fix cut-and-paste error message.
Revert a small portion of r263198 left over from local testing: don't
enable PCB groups and RSS by default [yet].
Use the system queue.h instead of bundling its own.

PR:		bin/187067
Submitted by:	lulf
Be a little more verbose in service's error message

PR:		bin/187118
Submitted by:	culot
Garbage collect long time obsoleted (or never used) stuff from routing API.
Add some documentation for bsd.test.mk.