Update OpenBSD CVS revision for our r255232.

This is a no-op to make it easier to track changes from OpenBSD

MFC after:	3 days
cxgbe(4): Allow for different pad and pack boundaries for different
adapters.  Set the pack boundary for T5 cards to be the same as the
PCIe max payload size.  The chip likes it this way.

In this revision the driver allocate rx buffers that align on both
boundaries.  This is not a strict requirement and a followup commit
will switch the driver to a more relaxed allocation strategy.

MFC after:	2 weeks
MFV r260710 + 275532:

Add a new method, nvlist_print_json to allow libnvpair to emit JSON.

MFC after:	1 month
Merge fixes from OpenBSD.

Check fstat return value.  Also, use off_t for file size and offsets.
Avoid iterating over end of string.

Obtained from:	OpenBSD (CVS rev. 1.41, 1.43)
MFC after:	1 week
cxgbe(4): allow the driver to use rx buffers that do not end on a pack
boundary.

MFC after:	2 weeks
MFp4: @181627

Allow UMA allocated memory to be freed when VNET jails are torn down.

Differential Revision: D1201
Submitted by: bz
Reviewed by: rwatson, gnn
Fix typos in comments and wrap to <80 columns

MFC after: 3 days
Merge remote-tracking branch 'freebsd/master' into hardened/current/master
Merge remote-tracking branch 'origin/hardened/current/master' into hardened/current/segvguard