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 - using namespace boost is no longer used in pkt6_unittest.cc
 - copyright years updated
 - Pkt6::getRelayOption() documented
 - several methods are now better commented
 - ChangeLog now refers to libdhcp++, not b10-dhcp6

this will avoid unittest failure on netbsd, whose inet_pton behaves
differently than others:
http://git.bind10.isc.org/~tester/builder//BIND10/20130226211101-NetBSD6-i386-GCC/logs/unittests.out

Conflicts:
	src/bin/xfrout/tests/xfrout_test.py.in
	src/bin/xfrout/xfrout.py.in

also added commments about the intent.

* Remove exceptions that are not thrown.

should be trivial, so directly committing.

it was already implemented, but more test cases and doc were now added.
some other cleanups are made.

more tests and doc were added, and removed the createFromLexer test
(it doesn't make sense any more).  some other cleanups were also made.

will fix distcheck failure on some platforms.  okayed on jabber

"check" in __check_group_recvmsg was added for a historical reason and
is not really appropriate any more (it doesn't do any check internally)

mostly on the introduction of 'want_answer" and the rpc_call method.
should be essentially trivial, but still require some amount of change.
some tests still fail.

I kept the wrong version of the code.

fixed Conflicts:
	src/bin/stats/stats.py.in
(some tests current fail; will fix them)

This commit disables the NSECLikeBitmapTest.badText unittest pending
further discussion during review. Please see the source code for
comments.