em/emx: Update man page
em: 82543 and 82542 could only suport 256 TX/RX descriptors
libz: Fix typo on Symbol map

This typo was discovered as fallout from a dports test run meant to
verify the new versioned system libraries.
libncurses: Include symbols for wide character support
libbz2: Add two missing private symbols to the map
carp: Add TSO and TXCSUM support

The carp's ifnet.if_hwassist is inheritted from the parent device.
carp: Increment output statistics properly
ethernet: Constify the lladdr pointer passed to ether_ifattach()
carp: Constify carp_etheraddr
carp: Prioritize carp advertisement packets
netrate/netperf: %.2f should be accurate enough
netrate/netperf: Record min/max results and calculate Jain's fairness index
route.8: Mention -msl, -iw and -iwmax
mbuf: Cache align mbuf type statistics
mbuf: Cache align mbuf statistics
libthread_xu - Remove unconditional debugging, slight code flow adjustment

* Remove an unconditional fprintf to stderr that is no longer needed

* Ensure that __thr_umtx_timedlock() doesn't break out on EINTR.  Note
  however that the functions it calls shouldn't be able to return EINTR
  so this change is really just to make things look more correct.
cpdup - native linux compile

* Add an #ifdef to define away __ specials so a straight build under
  linux works on unmodified sources.
tmpfs - Handle low memory situations a little better

* When memory starts to get low start bdwrite()ing buffers on file
  write instead of buwrite()ing them to force the data to start staging
  through the buffer cache.

* Rename some generic defines BSIZE / BMASK -< TMPFS_BLKSIZE / TMPFS_BLKMASK

* Set b_act_count to 0 and B_RELBUF in the pageout case to force the
  underlying VM pages to recycle to the inactive queue after the I/O is
  complete.
kernel - Improve pageout daemon for tmpfs write load

* Rewrite vm_object_page_collect() and vm_pageout_clean() to align the
  set of pages being flushed to a swap cache stripe (~16-32 pages).

* Do a better job tracking how many pages have been cleaned by the pageout
  daemon.

* Setup an iterator and allow the inactive scan and the active scan to
  break out of their respective loops if they meet their quota early.

* Disable the swap iterator for now, it has not been shown to improve
  matters (yet).
tmpfs - Handle low memory situations a little better (2)

* When handling pageout daemon requests we want to try to free pages
  directly to the VM page cache or the freeq and not necessarily cycle
  them through active or inactive.

  Shortcutting to the cache/free queues will allow the machine to
  unstick much more quickly which is particularly important on boxes
  with a lot of memory because the pageout hysteresis runs in such a
  large range.

* Greatly improves monster's performance under extreme tmpfs write loads.