and detailed tests.

pydnspp_towire is a separate utility to centralize the code logic for
toWire() bindings.

implementatons so that they use the separate-file approach and benefit
from util/python utilities.

One major exception is message_python, for which a new (quite trivial)
method is added: get_tsig_record().

safer creation of python objects in C++- binding.

"pyunittests_util".  It currently has one method named fix_current_time()
to tweak the current time value for time dependent python libraries
using C++ backend.

(accidentally committed auto-generated file.)
This reverts commit 296ec6be.

decoupled from the main pydnspp so that it can be used from tsigerror_python
separately (there should be no behavior change to the Rcode binding itself)

Add MessageReader virtual destructor.  The NetBSD compiler complained
that no virtual destructor had been declared when there were virtual
methods in the class.

When logging, the conversion of the parameters to string is done via
boost::lexical_cast.  This uses operator<<(), so if the object has
that function defined for it, there is no need to explicitly call
the object's toText() method when passing it as a logging parameter.

Conflicts:
	src/lib/log/README
	src/lib/log/logger_support.cc
	src/lib/log/messagedef.cc
	src/lib/log/messagedef.h
	src/lib/log/messagedef.mes
	src/lib/log/tests/logger_support_test.cc
	src/lib/log/tests/run_time_init_test.sh.in

Also updated some message IDs - since the message logged now includes the
prefix, there is no need to suggest the prefix in the ID itself (e.g.
MSGRDERR now becomes READERR as it will be output as MSG_READERR).