Some style(9) fixes

MFC after:	1 month
X-MFC with: r259284
bhyve(8) man page.

mdoc formatting and much input and review from Warren Block (wblock@).

Reviewed by:	many
MFC after:	3 days
rlimit: add and utilize lim_shared

MFC after:	2 weeks
rlimit: avoid unnecessary copying of rlimits

If refcount is 1 just modify rlimits in place.

MFC after:	2 weeks
sbin/devd/devd.cc
	Increase the size of devd's client socket's send buffer from the
	default (8k) to 128k.  This prevents clients from getting
	POLLHUPped during event storms.  For example, during zpool creation,
	the kernel emits a resource.fs.zfs.statechange event for every vdev
	in the pool.  A 128k buffer is large enough to hold the statechange
	events for a pool with nearly 800 drives.

Reviewed by:	ian, imp
Approved by:	ken (mentor)
Sponsored by:	Spectra Logic Corp
MFC after:	4 weeks
getopt_long.3: wording quibbles

- Make wording more clear: "is expect" vs "is expected" [1]
- Remove extraneous trailing period..

Reported by:	dim [1]
sbin/devd/devd.cc
	Promoting the SIGINFO handler's log message from LOG_INFO to
	LOG_NOTICE, and promoting the "Processing event ..." message from
	LOG_DEBUG to LOG_INFO.  Setting the logfile to LOG_NOTICE with this
	change will have the same result as setting it to LOG_INFO without
	this change.  Setting it to LOG_INFO with this change will include
	the useful "Processing event ..." messages that were previously at
	LOG_DEBUG, without including useless messages like "Pushing table".

	The intent of this change is that one can log "Processing event ..."
	without logging "Pushing table" and related messages that are sent
	for every event.  The number of lines actually logged is reduced by
	about 75% by making this change and setting syslog to LOG_INFO vs
	setting syslog to LOG_DEBUG.

etc/syslog.conf
	Changing the recommended loglevel to notice instead of info.

Sponsored by:	Spectra Logic Corp
MFC after:	4 weeks
Read card capabilities after firmware initialization, instead of setting
them up as part of firmware initialization (which the driver gets to do
only if it's the master driver).

Read the range of tids available for the ETHOFLD functionality if it's
enabled.

New is_ftid() and is_etid() functions to test whether a tid falls within
the range of filter tids or ETHOFLD tids respectively.

MFC after:	2 weeks
Fix several panics when initialization of an ISA or PC-CARD device fails:

o  Assign sc->an_dev in an_probe() (which isn't really a probe function in
   the standard newbus sense) as we may need it for printing errors.
o  Use device_printf() rather than if_printf() in an_reset() - this is
   called from an_probe() long before the ifp structure is initialised
   in an_attach().
o  Initialize the ifp structure early in an_attach() as we use if_printf()
   in cases where allocation of descriptors etc fails.

MFC after:	3 days
Rebase the PMC indices at 1, since PMC_SOFT is at 0.

MFC after:	1 week
Add userland PMC backtracing, and use the PMC trapframe macros for kernel
backtraces.

MFC after:	1 week
Widen lun_id_t to 64 bits. This is a follow-on to r257345 to let the kernel
support all valid SAM-5 LUN IDs. CAM_VERSION is bumped, as the CAM ABI
(though not API) is changed. No behavior is changed relative to r257345
except that LUNs with non-zero high 32 bits will no longer be ignored
during device enumeration for SIMs that have set PIM_EXTLUNS.

Reviewed by:	scottl
Avoid warning about insecure format with clang.
Reduce disc1.iso size by 74MB by removing lib32 libraries, sendmail,
and atf.

MFC after:	3 days
X-MFC-To-10:	immediate (-RC2 requirement)
Sponsored by:	The FreeBSD Foundation
proc exit: don't take PROC_LOCK while freeing rlimits

Code wishing to check rlimits of some process should check whether it
is exiting first, which current consumers do.

MFC after:	2 weeks
revise the helper functions to lookup binaries and their
shared libraries.
Defer start/stop port to workqueues.

We need to do this because the Linux compat layer uses sx(9) for
mutex, however the lagg code uses rmlocks and calls into the mellanox
driver.  This causes deadlock due to sleeping while holding a rmlock.

Submitted by: Shahar Klein (shahark mellanox.com)
MFC After: 3 days.
split netmap code according to functions:
- netmap.c		base code
- netmap_freebsd.c	FreeBSD-specific code
- netmap_generic.c	emulate netmap over standard drivers
- netmap_mbq.c		simple mbuf tailq
- netmap_mem2.c		memory management
- netmap_vale.c		VALE switch

simplify devce-specific code
mdoc: sort SEE ALSO.
Bump libcam shared library version forgotten in r259397.

Submitted by:	kib