Removed support for Python 2.1, fixed yield test, and added a test for
bad names set by exception handlers.

the list of names

Added tests.

throwing OverflowError.

that depends on it to raise an OverflowError when presented with a
number above sys.maxint.  We work around it here.

preferred spelling for 'CONTEXTS/varname'.

to REQUEST.URL to prevent accidental overriding.

notice that the date is a long.

Make the cache manager report correct values for the object cache size.

_delObject. This could break code expecting to do cleanups before
deletion.

DateRangeIndexes blew up when attempting to store a date far in the future ( > Y2038 ).  This is a workaround.  The real fix would be to come up with a different conversion algorithm or to use OOBTrees to store datum.

configuration setting

we get the port number we thought we had

Add <warnfilter> section, which allows you to configure Python warning filters in zope.conf.  Useful for suppressing the USELESS DeprecationWarnings that emanate from TALGenerator wrt i18n.

additional MIME type to filename extension mappings.  The "mime-types"
setting may be given more than once in the configuration file; the
files have the same format at the mime.types file distributed with
Apache.

Not sure if this should be ported to the Zope 2.7 branch.