to be more synchronized with merged #1582.

Or, everybody who accepts a shutdown command with pid now. Stats needed
to be updated because it did call functions based on the name and spec
file somehow.

Conflicts:
	src/bin/resolver/main.cc

They'd get caught by an exception anyway.

is no different from the non-empty wildcard NXRRRSET in terms of query
processing.

also made a non-related cleanup: removed resetting of nsec3_fake_ in the
fake findNSEC3() method.  This reset wasn't really necessary, and unless/until
we need that it'd be better to limit the place of tweaking such mutable
variables.

case.

Message::addRRset().

the older version of wildcardNxrrsetWithNSEC3 was removed.  also extended
some existing tests so it's easier to detect the cause when subsequent
updates introduce a regression.

of find() based on recent updates (there's no WILDCARD_NXRRSET, etc.)

see ticket #1668

of honoring C++ namespaces).

Conflicts:
	src/bin/auth/tests/query_unittest.cc

"string.h" is requested to define memset().