I think these changes are correct, but I'm not sure.  Could someone
who knows how this module works test it?  It can at least start on
the cmd line.

So there doesn't seem to be much point to checking here.

Bottom factor out some common code.

Top/Bottom factor out some common expressions
Add a XXX comment about widing offset.

We know it's not NULL from the ParseTuple and DbObject_Check will verify
it's not NULL.

i.e. do *not* expand tabs, but treat them as whitespace that is not
equivalent to spaces.  Add a couple of test cases.  Clarify docs.

versus generator period.  While this was a real weakness of the
older WH generator for lists with just a few dozen elements,
and so could potentially bite the naive ;-), the Twister should
show excellent behavior up to at least 600 elements.

Module docstring:  reflowed some jarringly short lines.

varies between __main__ and other modules, and strongly suggest not touching
it but using __builtin__ if absolutely necessary

Summary of changes:

- support for 'variable sized' data
- support for anonymous structure/union fields
- fix severe bug with certain arrays or structures containing more than 256 fields

Summary of changes:

- support for 'variable sized' data
- support for anonymous structure/union fields
- fix severe bug with certain arrays or structures containing more than 256 fields

  * restore "Extending optparse" section
  * document ALWAYS_TYPED_ACTIONS (SF #1449311)

- update header checks, using autoconf
- provide dummies for getenv, environ, and GetVersion
- adjust MSC_VER check in socketmodule.c

PyThreadState_GET() complains if the tstate is NULL, but only in debug mode.

Also improve error message on overflow.

An object with __call__ as an attribute, when called, will have that attribute checked for __call__ itself, and will continue to look until it finds an object without the attribute.  This can lead to an infinite recursion.

Closes bug #532646, again.  Will be backported.

Occurences in email and compiler were ignored due to backwards compat requirements.

clean up files and directories the tests often leave behind by
mistake.  This is the first time in history I don't have a bogus
"db_home" directory after running the tests ;-)

Also worked on runtest's docstring, to say something about all the
arguments, and to document the non-obvious return values.

New functions runtest_inner() and cleanup_test_droppings() in
support of the above.