Issue #1251592 by David_Rothstein, Set reasonable default values if date formats have not been configured, and add tests for that.

Issue #1242764 Add tests for every possible combination of field type, timezone handling, and granularity.

Issue #1234140 by arlinsundbulte, Change terminology in user-facing text from 'From/To Date' to 'Start/End Date'.

Issue #1161006 by justinrandall, Add tests to check that dates that should have time but do not are correctly caught in validation.

#935076 Add tests, including one provided by tristanoneil, plus a few fixes uncovered by the tests. More tests coming, this is a start.

More work on repeating date computations and their tests. Adding repeating dates to CCK date fields now seems to be working, at least for the tested scenarios.

More rework of the date repeat rrule calculations; move lots of the code into .inc files since these are used often so no reason to parse all that code on every page.

A very very very very rough implementation of a repeating date in the CCK date module using Date Repeat. Still needs lots more work.

Fix PHP4 wrapper to be sure year is always padded to four digits.

Get tests working for PHP4 date_modify wrapper.

Standardize on date_make_date() instead of calling date_create() in some places so there is a central place to test the timezone and date values before creating the date.

Add method to customize the labeling of date parts to allow the label above the date part, inserted as the first item in the options array, or omitted.

Remove some functions that are not being used or move them so they are called only when needed to clean up the code.

More cleanup of PHP4 wrapper functions. We can get most things right except that there is no reliable way to get daylight savings time right in PHP4.