MFC:  em(4) updates.
Drop the other shoe.

vinum_start: MFC: recognize storage arrays as potential carriers of
vinum drives.

Approved by: murray
Bring the iir(4) driver back to -stable, at the request of the maintainer.
Temporarily unhook iir from the build of modules, since the module directory
did not get MFC'd as well.
This stops breaking the build.
MFC:	Add a Makefile for the iir module.
Fix broken sourcefiles by removing #include <sys/endian.h> and adding
an #include to <machine/endian.h>.  STABLE does not have the former.

This gets it compiling on STABLE, but it cannot be kldloaded, since it
will try to reference non-existing functions.
Now that iir has a directory and compiles, hook it back up into the build.
Do note, however, that the code is broken and not backported to STABLE at,
but is merely a copy of the code as it is in CURRENT.
Add iir's files so that GENERIC builds.

Approved by:	A desire not to be shot for breaking STABLE.
Undo ill-advised changes only applicable to CURRENT so that this builds
and links.

Approved by:	Fixed faster than you could complain. 8)
MFC:  Fix a bug where multiple containers were not enumerated correctly,
      causing likely data loss.  Put in extra seatbelts so this bug
      won't infect other code.

Approved by:	re
Repair #include files by removing <machine/endian.h>.
This brings us back to the original MFC without <sys/endian.h>.

Submitted by:	bde
MFC: Merge the latest -current man page into -stable.

Approved by:	re@
MFC: net.inet.icmp.icmplim_output

Approved by:	dan, murray
MFC 1.73: treat input as unsigned so that 8-bit characters don't get
sign-extended.

Approved by:	murray
MFC 1.71: fix spacing.

Approved by:	murray (blanket)
MFC 1.41: ${BDECFLAGS} are added to CFLAGS.

Approved by:	murray (blanket)
MFC 1.27, 1.28: document usershow -7 and -F.

Approved by:	murray (blanket)
Minimal patch to get NetGear622 talking to cisco gigE switches.

Approved by:	re
MFC rev 1.15: regen

Approved by:	re
inet_aton returns 0 for failure, not -1.

PR:		37680
Submitted by:	Scott Bertilson <scott@nts.umn.edu>
Approved by:	re