of python changes (2.5 -> 2.6). Bug #1552935.

and to include the default value
(merged from release25-maint revision 51890)

- minor markup cleanup
(forward-ported from release25-maint revision 51888)

Building with HP's cc on HP-UX turned up a couple of problems.
_PyGILState_NoteThreadState was declared as static inconsistently.
Make it static as it's not necessary outside of this module.

Some tests failed because errno was reset to 0. (I think the tests
that failed were at least: test_fcntl and test_mailbox).
Ensure that errno doesn't change after a call to Py_END_ALLOW_THREADS.
This only affected debug builds.

(Also fix some whitespace)

Klocwork #364.

As mentioned on python-dev, reverting patch #1504333 because it introduced
an infinite loop in rev 47154.

This patch also adds a test to prevent the regression.

on exception classes.  Would require introducing a tp_unicode slot to make it
work otherwise.

Fixes bug #1551432 and will be backported.

as first argument, and failed with a 'bad argument to internal function'
error message.

and they gave a strange error message from PyArg_ParseTuple:
    function takes exactly 2 arguments (3 given).

With tests.

if an input hook has been defined.  Patch by Richard Boulton.

This select() code is only executed with readline 2.1, or if
READLINE_CALLBACKS is defined.

Backport candidate for 2.5, 2.4, probably earlier versions too.

Fix the speed regression in inspect.py by adding another cache to speed up getmodule(). Patch #1553314

offending buildbot

Also make sure that every exception class has __module__ set to
'exceptions'.

imports (if not in package and if beyond toplevel package).