- fix some places where counters into ob_digit were declared as
   int instead of Py_ssize_t
 - add (twodigit) casts where necessary
 - fix code in _PyLong_AsByteArray that uses << on negative values

allow adding directories to a zipfile.

do an explicit seek to the end of file (so that e.g. tell() returns the
file size rather than 0). This is consistent with the behaviour of the
traditional 2.x file object.

Issue 5013: Fixed bug in FileHandler when delay was set - added fix for RotatingFileHandler and changed header comment slightly.

That assures that IDLE's help always points to the correct
version and the latest update with all bug fixes.

with manually specified, conflicting names.

Before:
    http://docs.python.org/dev/library/collections.html#id1

After:
    http://docs.python.org/dev/library/collections.html#counter-objects

* Constructor and update() support keyword args (like their dict counterparts).
* The 'del' statement no longer raises KeyError for missing values.
* Add multiset operations:  __add__, __sub__, __and__, __or__.

svn+ssh://pythondev@svn.python.org/python/branches/tnelson-trunk-bsddb-47-upgrade

svn+ssh://pythondev@svn.python.org/python/branches/trunk-math

Let os.ftruncate raise OSError like documented.