Berch)

2) Remove micro optimization (inline checking for NaN before calling
   mpd_qcheck_nans()) that probably has no benefit in this case.

2) Switch argument order to match the function signature of mpd_calloc()
   (cosmetic change, since the order is irrelevant).

The behavior of MessageDefect is legacy behavior.  The chances anyone is
actually using the undocumented 'line' attribute is low, but it costs
little to retain backward compatibility.  Although one of the costs is
having to restore normal exception behavior in HeaderDefect.  On the
other hand, I'll probably add some specialized behavior there later.

2) Add rigorous error analysis to _mpd_qlog10 (ACL2 proofs exist).

3) Use the relative error as a basis for the interval generation in the
   correction loop (same as in _mpd_qln()).

The strict checks and netmask computing don't make sense if constructed with
a ALL_ONES mask based on addresses. Also fix a bug due to mis-indentation of
a return statement in the same code block.

use. Make the get_entity 'method' a module function as it did not use 'self'.
Delete buggy _find_constructor function that is not needed, at least in 3.x.
Revise get_argspec so all tests pass.  Add and fix NEWS entries.

   List all of them in the comment.

2) Use the recently stated relative error of _mpd_qln() to generate the
   interval for the exact value of ln(x). See also the comment in mpd_qexp().

with VS2010sp1

Previously multiprocessing only expected int or str.  It also wrongly
used an exit code of 1 when the argument was a string instead of zero.

Initial patch by mouad

2) Simplify the precision adjustment code for values in [0.900, 1.15].

Close #6203: Document that Python 3 sets LC_CTYPE at startup to the user's preferred locale encoding

before their mutexes.

open() and io.TextIOWrapper are now calling locale.getpreferredencoding(False)
instead of locale.getpreferredencoding() in text mode if the encoding is not
specified. Don't change temporary the locale encoding using locale.setlocale(),
use the current locale encoding instead of the user preferred encoding.

Explain also in open() documentation that locale.getpreferredencoding(False) is
called if the encoding is not specified.

- remove duplicate netmask/hostmask code
- make two ifs more pythonic
- remove packed property for networks
- some minor pep8 stuff
- Test coverage is now at 97%, the rest are mostly unreachable safeguards.