SF bug #217195.
Not sure if chomp() is correct, but chop() definitely has problems.
This change seems to have no ill effects.

Backport candidate if Fred agrees.

these days.

other tests to generate warning when they didn't before.  In
particular, this cancels not only filters set by -W, but also from
test.regrtest.

this avoids resubmitting POST data.

Remove redundant 'Page' from label passed from cmd_new().

set it.
Closes SF issue #624729.

hardcoding "/tmp".

Show errors returned by store().

A few nits.

guessing that urlparse() / urlunparse() use them.

Add tests of urldefrag().

Use integers in stat tuple, optionally floats in named fields.

call.  This caused mysterious crashes (hard to debug because it was
happening in a child process).

                types.StringType, inherit from list instead of
                UserList.

classes was called with three arguments.  This makes no sense, there's
no way to pass in the "modulo" 3rd argument as for __pow__, and
classic classes don't do this.  [SF bug 620179]

I don't want to backport this to 2.2.2, because it could break
existing code that has developed a work-around.  Code in 2.2.2 that
wants to use __ipow__ and wants to be forward compatible with 2.3
should be written like this:

  def __ipow__(self, exponent, modulo=None):
      ...