__all__ attribute, rather than using a hardcoded and incomplete list.

correct place to look for it is the Content-Type header.

Patch by Darren Worrall.

a non-default timer wasn't actually used by the individual Tests.

Also add description of '?' struct format character.  Thanks Gabriel
Genellina for the patch.

is specified on OSX. Fixes a regression in 2.6.3.

into the available precision.  (Tests for this change are included in
the most recent set of testcases from the Decimal Specification site;
those testcases will be updated shortly.)

_PyUnicode_IsLinebreak and _PyUnicode_IsWhitespace.

It now also parses the Unihan.txt for numeric values.

in regrtest, with warnings if the called test modifies them.

(and also, with luck, on the x86 FreeBSD buildbot), by making sure
that some user time is used in test_itimer_virtual.