tigefa4u projects Trac

Make the HDFWrapper more robust when assigning `dict` values (could have failed for UTF-8 encoded `str` keys). Closes #3901.

Database connection pool: check whether the timeout period is elapsed before waiting again.

Database connection pool: more robust code in case the connection becomes stale.

In particular, this takes into account the fact that a `rollback` can fail at a critical time, as shown in #3894. Also, when a connection is closed in such cases, the `_cursize` must be decremented.

Database connection pool: some cleanups and use an assert instead of a test for something that shouldn't happen...

Adding a configurable timeout parameter for not waiting forever if there's no available connection.

datetime branch: moving most remaining datefmt-related calls from controllers to templates (milestone, changeset, timeline)

And also:
- fixed a small bug for the date format hints (was visible for the datetime hint)
- [http://blogs.law.harvard.edu/tech/rss#optionalChannelElements <pubDate> in RSS 2.0 feeds] should use `http_date`
- also use `http_date` in revision log text format (i.e. Changelog format)

datetime branch: a few small fixes
- attachment.date in the model should be a datetime object
- missing `utc` import in wiki web_ui.py
- a few formatting fixes

setuptools branch: require a version of setuptools that has actually been released :-P

setuptools branch: Ported basic changes for setuptools.

When creating a new environment, if the default `template_dirs` is kept, arrange for the run-time default to be used, i.e. don't hard-code that default in the TracIni. Closes #3904.