Add three-stream EVM values.
Bump the EVM array size up to fit the AR9380 EVM entries.
Add a few new fields to the RX vendor radiotap header:

* a flags field that lets me know what's going on;
* the hardware ratecode, unmolested by conversion to a bitrate;
* the HAL rs_flags field, useful for debugging;
* specifically mark aggregate sub-frames.

This stuff sorely needs tidying up - it's missing some important
stuff (eg numdelims) and it would be nice to put the flags at the
beginning rather than at the end.

Tested:

* AR9380, STA mode, 2x2 HT40, monitoring RSSI and EVM values
Ports are no more exported via cvsup, remove cvsup examples and documentation refering to ports

MFC after:	2 days
Don't use an empty struct.
Reduce HPET eventtimer priority on systems with 8 or more cores.  Price of
the lock congestion may be too high there (2.5% on 4x4 core AMD Opteron).
Reinitialize eh after pfil(9) processing.

PR:		176764
Submitted by:	adri
Remove LIBALIAS_LOCK_ASSERT(), including a couple with an uninitialzed
argument, in code that isn't compiled in kernel.

PR:		kern/176667
Sponsored by:	Nginx, Inc.
Fix for quite a special case when userland emulates a netgraph node, and
userland can reply to a message with NGM_HASREPLY bit set. In this case
we should not wait for a response to a responce.

PR:		176771
Submitted by:	Keith Reynolds <keith.reynolds tidalscale.com>
Fix spelling.

PR:		176777
Submitted by:	Andrey Simonenko <simon comsys.ntu-kpi.kiev.ua>
Fix the 'C' field for a running thread to match the behavior described
in the manpage by having it display the current CPU (ki_oncpu) rather
than the previously used CPU (ki_lastcpu).  ki_lastcpu is still used for
all other thread states.

Reported by:	Chris Ross <cross+freebsd@distal.com>
MFC after:	1 week
Disconnect files removed in r248151
Add "else" missed at r248154.
Convert the offset into the bar that contains the MSI-X table to an offset
into the MSI-X table before using it to calculate the table index.

In the common case where the MSI-X table is located at the begining of the
BAR these two offsets are identical and thus the code was working by accident.

This change will fix the case where the MSI-X table is located in the middle
or at the end of the BAR that contains it.

Obtained from:	NetApp
Return an error if sctp_peeloff() fails because a socket can't be allocated.

MFC after: 3 days
Merge remote-tracking branch 'upstream/master'