krping: In verbose mode print only first 128 bytes of krping data.

Submitted by:	Hariprasad at Chelsio dot com.
Sponsored by:	Chelsio Communications
fix typo, properly install a link to nv for nvlist_freev...
iwcm_event status needs to be populated for close_complete_upcall

Submitted by:	Hariprasad at Chelsio dot com
Sponsored by:	Chelsio Communications
Use pkg-1.4-style platform identifiers based on MACHINE_ARCH (e.g.
FreeBSD:11:amd64 instead of freebsd:11:x86:64) when bootstrapping pkg.
Thanks to portmgr for providing symlinks so both styles work.

Reviewed by:	bapt
MFC after:	3 weeks
Rename XFLAGS to XCFLAGS and XXFLAGS to XCXXFLAGS

This is less confusing names and actually more reflexting what they are intended
to.

Discussed with:	brooks
only install .pc files when we are not installing 32bit compat libs...

This fixes the problem of installing the .pc files multiple times...
Add CAPABILITIES and CAPABILITY_MODE to powerpc GENERIC64, missed with the addition to
GENERIC

MFC after:	3 weeks
Fix prototypes.
Drop __DECONST as well as few fixes of style(9).

Phabric:	D1012
Suggested by:	mjg, jhb
Reviewed by:	mjg, jhb
Sponsored by:	QNAP Systems Inc.
Allow loading of dtraceall without nfscl if what you really wnat is nfsclient

Obtained from:	Panzura tree
MFC after:	1 week
Change loginclass mutex to an rwlock.

While here reduce nesting in loginclass_free.

Submitted by:	Tiwei Bie <btw mail.ustc.edu.cn>
X-Additional:	JuniorJobs project
MFC after:	2 weeks