generate these opcodes.

this clarifies that they are part of an internal API (albeit shared
between pickle.py, copy_reg.py and cPickle.c).

I'd like to do the same for copy_reg.dispatch_table, but worry that it
might be used by existing code.  This risk doesn't exist for the
extension registry.

Imported the extension-registry dicts from copy_reg.py, in preparation for
tackling EXT[124].

module. This increases code coverage of Python/sysmodule.c
from 68% to 77% (on Linux).

The script doesn't exercise the error branch that handles an evil
or lost sys.excepthook in Python/pythonrun.c::PyErr_PrintEx().

Also this script might not work on Jython in its current form.

From SF patch #662807.

all protocols, so tried them under all.

hardcoded list.

duplication.  Note that these still don't get run under cPickle.

because it seems more consistent with the rest of the code.

cPickle_PyMapping_HasKey():  This extern function isn't used anywhere in
Python or Zope, so got rid of it.

earlier than the ones in which they were introduced.

  extension implemented flush() was fixed.  Scott also rewrite the
  zlib test suite using the unittest module.  (SF bug #640230 and
  patch #678531.)

Backport candidate I think.

outcome as __slotnames__ on the class.  (Like __slots__, it's not safe
to ask for this as an attribute -- you must look for it in the
specific class's __dict__.  But it must be set using attribute
notation, because __dict__ is a read-only proxy.)

   * Treat major, minor numbers of HTTP version as separate integers
   * Fix errors if version string is "HTTP/1.2.3" or even simply "BLAH".
   * send_error() checks if 'self.command' is a
     HEAD.  However, if there's an error parsing the first line of the
     HTTP request the self.command wasn't set yet; force
     self.command to be initialized to None.

slots even though they can be listed in __slots__.

are actually getting generated.  Add helpered method
ensure_opcode_in_pickle to do a correct job checking for that.  Changed
test_long1(), test_long4(), and test_short_tuples() to use it.

readability.

load_bool():  Now that I know the intended difference between _PUSH and
_APPEND, used the right one.

Pdata_grow():  Squashed out a redundant overflow test.

wasn't used outside the assert (and hence caused a compiler warning
about an unused variable in NDEBUG mode).  The assert wasn't very
useful any more.

_PyLong_NumBits(): moved the calculation of ndigits after asserting
that v != NULL.

huge.  On older Linux systems, the C library's strtod() apparently
gives up before seeing the end of the string when it sees so many
digits that it thinks the result must be Infinity.  (It is wrong, BTW
-- there could be an "e-10000" hiding behind 10,000 digits.)  The
shorter shuge still tests what it's testing, without relying on
strtod() doing a super job.

exception, ResourceDenied.  This is used to distinguish between tests that
are skipped for other reasons (platform support, missing data, etc.) from
those that are skipped because a "resource" has not been enabled.  This
prevents those tests from being reported as unexpected skips for the
platform; those should only be considered unexpected skips if the resource
were enabled.

Rename 'whitespace' global to '_whitespace' -- it's not part of the
public interface.