Replace the homegrown implementation of nitems() with calls to nitems()
(param.h).

Operating systems that don't have nitems() can easily define it on their own
net80211 OS-specific header file.

Discussed with:		adrian
Fix make depend
Belatedly add my birthday and fix a typo.
ext2fs: update format specifiers for ext4 type.

Previous bandaid was not appropriate and didn't really work for
all platforms. While here, cleanup the surrounding code to match
ffs_checkoverlap()

Reported by:	dim, jmallet and bde
MFC after:	3 weeks
Make carets line up in dtc diagnostics if the line starts with a tab.
Remove the {SRC,DOC,PORT}REVISION variables from release(7), and
update the default {SRC,DOC,PORT}BRANCH defaults.

Submitted by:	nwhitehorn
X-MFC-With:	r254224, r254294
X-MFC-To:	stable/9, releng/9.2
Added 4K quirks for:-
* OCZ Agility 2 SSDs
* Marvell SSDs
* Intel X25-M Series SSDs
If sys/param.h MAXPHYS has been tuned to exceed MFI_MAXPHYS, the mfi(4)
real JBOD mode (SYS PD) would fail fairly reliably during I/O.

Steal the mfi_disk.c check for this condition (indirectly) when establishing
d_maxsize.

Reviewed by:	ambrisko@
MFC after:	4 weeks
Sponsored by:	Yahoo! Inc.
sh: Allow a lone redirection before '|', ';;' or ';&'.

Example: </dev/null | :

PR:		181240
MFC after:	1 week
Fix several performance related issues in the new NFS server's
DRC for NFS over TCP.
- Increase the size of the hash tables.
- Create a separate mutex for each hash list of the TCP hash table.
- Single thread the code that deletes stale cache entries.
- Add a tunable called vfs.nfsd.tcphighwater, which can be increased
  to allow the cache to grow larger, avoiding the overhead of frequent
  scans to delete stale cache entries.
  (The default value will result in frequent scans to delete stale cache
   entries, analagous to what the pre-patched code does.)
- Add a tunable called vfs.nfsd.cachetcp that can be used to disable
  DRC caching for NFS over TCP, since the old NFS server didn't DRC cache TCP.
It also adjusts the size of nfsrc_floodlevel dynamically, so that it is
always greater than vfs.nfsd.tcphighwater.

For UDP the algorithm remains the same as the pre-patched code, but the
tunable vfs.nfsd.udphighwater can be used to allow the cache to grow
larger and reduce the overhead caused by frequent scans for stale entries.
UDP also uses a larger hash table size than the pre-patched code.

Reported by:	wollman
Tested by:	wollman (earlier version of patch)
Submitted by:	ivoras (earlier patch)
Reviewed by:	jhb (earlier version of patch)
MFC after:	1 month
Don't send uninitialized memory (two instances of 4 bytes) in
every cookie on the wire. This bug was reported in
https://bugzilla.mozilla.org/show_bug.cgi?id=905080

MFC after: 3 days
sh: Recognize "--" as end of options in local builtin.
Some objects - such as *_genassym.o are not hooked into
SRCS OBJS or anything else, yet have a dependency on symlinks
such as machine/

Reviewed by: obrien