Patch by Christian Heimes.

Once Barry and the email-sig have a working new version
we'll add it back.
If it doesn't make the 3.0a deadline (release August 31), too bad.

Known issues:

The string.Formatter class, as discussed in the PEP, is incomplete.

Error handling needs to conform to the PEP.

Need to fix this warning that I introduced in Python/formatter_unicode.c:
Objects/stringlib/unicodedefs.h:26: warning: `STRINGLIB_CMP' defined but not used

Need to make sure sign formatting is correct, more tests needed.

Need to remove '()' sign formatting, left over from an earlier version of the PEP.

a regular check and return an error if not unicode.

Verify that they print properly too.

at least for .keys() and .items() (not .values() of course).

Use self.assertTrue in test cases rather than the assert statement.

this would be nice.  I'm a little rusty.)