Vendor import of tcpdump 4.4.0.
- As a follow-up to r247565, make firmware images that do not require
  patching at runtime actually const.
- Remove pointless softc members by employing the corresponding constants
  directly.
- Remove pointless returns.
- Remove unnecessary inclusion of opt_device_polling.h.
- Replace an outdated and now bogus comment in bce_tick() with the
  appropriate one.

MFC after:	1 week
Update byacc to 20130304
- Do supply arguments as pointers to bce_get_{pg,rx}_buf() that are not
  altered or actually needed there any longer.
- Honor errors passed to the DMA mapping callbacks.
- In bce_get_rx_buf(), do not reserve stack space for more DMA segments
  than actually necessary.
- In bce_get_pg_buf(), take advantage of bus_dmamap_load_mbuf_sg(9).
- In bce_rx_intr(), remove a pointless check for an empty mbuf pointer
  which can only happen in case of a severe programming error. Moreover,
  recovering from that situation would require way more actions with header
  splitting enabled (which it is by default).
- Fix VLAN tagging in the RX path; do not attach the VLAN tag twice if the
  firmware has been told to keep it. [1]

Obtained from:	OpenBSD [1]
MFC after:	1 week
Assert that OBJ_TMPFS flag on the vm object for the tmpfs node is
cleared when the tmpfs node is going away.

Tested by:	bdrewery, pho
Remove the capitalization in the assertion message.  Print the address
of the object to get useful information from optimizated kernels dump.
After the object lock was dropped, the object' reference count could
change.  Retest the ref_count and return from the function to not
execute the further code which assumes that ref_count == 1 if it is
not.  Also, do not leak vnode lock if other thread cleared OBJ_TMPFS
flag meantime.

Reported by:	bdrewery
Tested by:	bdrewery, pho
Sponsored by:	The FreeBSD Foundation
MFV: tcpdump 4.4.0.

MFC after:	4 weeks
- Checking for spurious interrupts is only necessary when using INTx.
  Actually, this may be further optimized for controller variants
  supporting one-shot MSIs but I'm lacking the necessary hardware for
  testing.
- Add some missing synchronization of the statistics and status DMA
  maps.

MFC after:	1 week
Convert Makefile to have only one file for each line, while I'm there, sort
SRCS to ease future upgrades.
Diff reduction against tcpdump revision 949a22064d3534eddeb8aa2b9c36a50e45fe16fa.
Add macros which allow one to define SDT probes with six or seven arguments;
they are needed when porting some of the Solaris providers (ip, iscsi, and
tcp in particular).

dtrace_probe() only takes five arguments from the probe site, so we need to
add the appropriate cast to allow for more than five arguments. The extra
arguments are later copied out of dtrace_probe()'s stack frame by
dtrace_getarg() (or the provider-specific getarg method) as needed.

MFC after:	1 week
If the -r option is given we cannot enter capability mode.
The option tells kdump to convert numeric UIDs and GIDs into user and
group names plus to convert times and dates into locallized versions.
This all needs opening various files at various occasions.
Remove unused files.
Revert files with no local changes to their vendor state to ease future
upgrading.
 - Convert the bufobj lock to rwlock.
 - Use a shared bufobj lock in getblk() and inmem().
 - Convert softdep's lk to rwlock to match the bufobj lock.
 - Move INFREECNT to b_flags and protect it with the buf lock.
 - Remove unnecessary locking around bremfree() and BKGRDINPROG.

Sponsored by:	EMC / Isilon Storage Division
Discussed with:	mckusick, kib, mdf
xpt_create_path() requires mfi_io_lock to be held, so do it.

mfi(4) doesn't panic on host startup now.

MFC this if svn 249468-242726 is shoveled back to stable/9

Obtained from:	Yahoo! Inc.
Allow building with clang (which is being really stupid here...).
Different approach to making all compilers happy.
Apply the ad* => ada* IDE device name transition to the Xen block
front driver.

Submitted by:	Bei Guan <gbtju85@gmail.com>
Reviewed by:	gibbs
MFC after:	1 week