Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Markup fixes.

Add the missing copyright.

Spotted by: ru

Sort SEE ALSO references (in dictionary order, ignoring case).

Mechanically kill hard sentence breaks and double whitespaces.

Change the code that enables/disables the ATM channel to use the
new ATMIOCOPENVCC/CLOSEVCC. This allows us to not only use UBR channels
for IP over ATM, but also CBR, VBR and ABR. Change the format of the
link layer address to specify the channel characteristics. The old
format is still supported and opens UBR channels.

Reference the patm(4) man page from here, like the other ATM drivers are
referenced.

This is a driver for Fore PCA200E cards that uses busdma and works on
little endian and big endian and with 32 and 64 bit pointers. It already
has the hooks to be used for HARP, NATM and ngATM.

Reference the hatm(4) driver man page.

Factor out the description of how to configure a CLIP into its own
man page. This will be more scaleable as more driver man pages hit
the tree. Add also a description on how to do this configuration
in the rc.conf script.