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This is temporary.

Also remove references to xfrin and xfrout.

And regenerate manpage.

the detailed version of comments were intended to be for auth, but placed
in the wrong place (resolver/main).

talked to the boss (via msgq), not the socket creator directly).  also
consolidated the mostly identical comments for auth and resolver for DRY.

to clarify that it's also necessary for listen_on.

until the initial configuration is completed.  otherwise it confuses
communication with the socket creator and makes listen_on fail.

more strict on this point.

it's 0 or non 0).  same change for IPV6_V6ONLY, too.  also change ASSERT_EQs
to EXPECTs: failure of them doesn't seem to cause catastrophy in the subsequent
tests.  made also some style guideline fixes, too.

close the function if send_fd fails.

value identical to the parameter name itself.

If it is run from the source code, all programs should be run from
there.

Added the v6 only flag for IPv6 sockets. Both reuse address and this
flags get tested.

* Close the socket after sending from the creator, so it doesn't leak
  (but it doesn't seem to help :-().
* Correct range for the token numbers, so they are harder to guess
* Set the socket as reuse address

The socket and an address. We don't care about the address, but we still
need to unpack the socket out.

The ModuleCCSession called the update of config which already needed the
SocketRequestor. But the requestor doesn't need the ModuleCCSession,
cc::Session is enough, so changing it and moving up in the
initialization process a little.

Conflicts:
	src/lib/server_common/socket_request.cc
	src/lib/util/io/fd.cc

temporary variable.

other comment on this point.