(v. 1.68) and tests (v. 2.58) from IBM.

Adds test cases which use Allow: as well.

this should fix the failures on the solaris buildbot.

(35% faster according to pybench)

convert test_locale to unittest, and add a mechanism to override localconv() results for further testing (#1864, #1222)

This patch publishes the work done until now
for Python 3.0 compatibility. Still a lot
to be done.

When possible, we use 3.0 features in Python 2.6,
easing development and testing, and exposing internal
changes to a wider audience, for better test coverage.

Some mode details:
http://www.jcea.es/programacion/pybsddb.htm#bsddb3-4.7.2