When clearing relocations to __dtrace* symbols, handle both SHT_REL and
SHT_RELA sections properly instead of assuming that the relocation section
is of type SHT_REL.

Submitted by:	Prashanth Kumar <pra_udupi@yahoo.co.in> (original version)
MFC after:	1 month
Claim copyright since I've almost rewritten this file in r256512.
- There's no need to keep track of resource IDs.
- Simplify MSI allocation and release. For a single one, we don't need to
  fiddle with the MSI count and pci_release_msi(9) is smart enough to just
  do nothing in case of INTx.
- Don't allocate MSI as RF_SHAREABLE.
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.

MFC after:	1 week
In sys/dev/tpm/tpm.c, #if 0 an unused static function.

MFC after:	3 days
In sys/dev/usb/wlan/if_urtw.c, #if 0 a static const variable, which has
been unused since r198194.

MFC after:	3 days
In sys/dev/vxge/vxgehal/vxgehal-ring.c, #if 0 an unused static function.

MFC after:	3 days
In sys/dev/scc, remove unused static function scc_setmreg().  While
here, invoke scc_getmreg() in two more places where it can be used.

Reviewed by:	marcel
MFC after:	3 days
- Remove a redundant variable in mpt_pci_attach().
- #if 0 the currently unused paired port linking and unlinking of dual
  adapters.
- Simplify MSI/MSI-X allocation and release. For a single one, we don't need
  to fiddle with the MSI/MSI-X count and pci_release_msi(9) is smart enough
  to just do nothing in case of INTx.
- Canonicalize actions taken on attach failure and detach.
- Remove the remainder of incomplete support for older FreeBSD versions.

MFC after:	1 week
Add the '-b' flag to 'camcontrol devlist'.  This prints only the existing
buses and their parent sims, useful for creating a sim->bus->device map.

Obtained from:	Netflix
MFC after:	3 days
Fix couple of bugs from r257692 related to scan of address list on
an interface:
- in in_control() skip over not AF_INET addresses.
- in in_aifaddr_ioctl() and in_difaddr_ioctl() do correct check
  of address family, w/o accessing memory beyond struct ifaddr.

Sponsored by:	Nginx, Inc.
- Add support for using MSI instead of INTx, controllable via the tunable
  hw.ral.msi_disable (defaulting to using MSI).
- Probe with BUS_PROBE_DEFAULT instead of 0.
- Nuke code setting PCI_POWERSTATE_D0; pci(4) already does that for type 0
  devices.
- Use PCIR_BAR instead of a homegrown macro.
- There's no need to keep track of resource IDs.
- Release resources again in case attaching fails.
- Quiesce the interrupt before detaching.
- Sprinkle const.
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.
- Trim headers.
- Nuke dupe $FreeBSD$.

MFC after:	1 week
- Probe with BUS_PROBE_DEFAULT instead of 0.
- Nuke code setting PCI_POWERSTATE_D0; pci(4) already does that for type 0
  devices.
- Use PCIR_BAR instead of a homegrown macro.
- There's no need to keep track of resource IDs.
- Quiesce the interrupt before actually detaching.
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.
- Nuke dupe $FreeBSD$.

MFC after:	1 week
- Probe with BUS_PROBE_DEFAULT instead of 0.
- Nuke code setting PCI_POWERSTATE_D0; pci(4) already does that for type 0
  devices.
- Use PCIR_BAR instead of a homegrown macro.
- There's no need to keep track of resource IDs.
- Quiesce the interrupt before actually detaching.
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.

MFC after:	1 week
- Probe with BUS_PROBE_DEFAULT instead of 0.
- Nuke code setting PCI_POWERSTATE_D0; pci(4) already does that for type 0
  devices.
- There's no need to keep track of resource IDs.
- Quiesce the interrupt before actually detaching.
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.

MFC after:	1 week
* ld80/k_expl.h:
* ld128/k_expl.h:
  . Split out a computational kernel,__k_expl(x, &hi, &lo, &k) from expl(x).
    x must be finite and not tiny or huge.  The kernel returns hi and lo
    values for extra precision and an exponent k for a 2**k scale factor.
  . Define additional kernels k_hexpl() and hexpl() that include a 1/2
    scaling and are used by the hyperbolic functions.

* ld80/s_expl.c:
* ld128/s_expl.c:
  . Use the __k_expl() kernel.

Obtained from:	bde
* Makefile:
  . Hook coshl, sinhl, and tanhl into libm.
  . Create symbolic links for corresponding manpages.
  . While here remove a nearby extraneous space.

* Symbol.map:
* src/math.h:
  . Move coshl, sinhl, and tanhl to their proper locations.

* man/cosh.3:
* man/sinh.3:
* man/tanh.3:
  . Update the manpages.

* src/e_cosh.c:
* src/e_sinh.c:
* src/s_tanh.c:
  . Add weak reference for LBDL_MANT_DIG==53 targets.

* src/imprecise.c:
  . Remove the coshl, sinhl, and tanhl kludge.

* src/e_coshl.c:
  . ld80 and ld128 implementation of coshl().

* src/e_sinhl.c:
  . ld80 and ld128 implementation of sinhl().

* src/s_tanhl.c:
  . ld80 and ld128 implementation of tanhl().

Obtained from:	bde (mostly), das and kargl
Add the -R option to allow fsck_ffs to restart itself when too many critical
errors have been detected in a particular run.

Clean up the global state variables so that a restart can happen correctly.

Separate the global variables in fsck_ffs and fsdb to their own file.  This
fixes header sharing with fscd.

Correctly initialize, static-ize, and remove global variables as needed in
dir.c.  This fixes a problem with lost+found directories that was causing
a segfault.

Correctly initialize, static-ize, and remove global variables as needed in
suj.c.

Initialize the suj globals before allocating the disk object, not after.
Also ensure that 'preen' mode doesn't conflict with 'restart' mode

Submitted by:	scottl, max
Reviewed by:	max, mckusick (earlier version)
Obtained from:	Netflix
MFC after:	3 days
Add globs.c to the build now that it's a separate file.

Reviewed by:	max
Obtained from:	Netflix
MFC after:	3 days
Multi-queue NIC drivers and multi-port lagg tend to use the same lower
bits of the flowid as each other, resulting in a poor distribution of
packets among queues in certain cases.  Work around this by adding a
set of sysctls for controlling a bit-shift on the flowid when doing
multi-port aggrigation in lagg and lacp.  By default, lagg/lacp will
now use bits 16 and higher instead of 0 and higher.

Reviewed by:	max
Obtained from:	Netflix
MFC after:	3 days
gcc: small diff reduction wrt gcc43 and Apple GCC.

Obtained from:	gcc 4.3 (rev. 121464, 122528, 124106; GPLv2)
MFC after:	3 weeks