- Fix one bug that prevent current testcases from working.
- Implement INI setting default timezone, for now the env var "TZ" can be
  used.
- Port over my 200 test cases to .phpt format.
- Write an error handler for unexpected characters while parsing dates.
- Remove old parsedate.* code from ext/standard 
- Move all date/time related functions from ext/standard to ext/date
- Move all date/time related tests from ext/standard/tests to ext/data/tests
