TimezoneConverter: add support for my time/my timezone.
TimezoneConverter: change to AM/PM

The newer IAs I am seeing with this information do not use the periods.

Also, clean up the test file a bit with sections and definitive "don't
care" settings.
TimezoneConverter: fix noon misinterpretation.

Not cool that I managed to enshrine it in the tests first. :(
TimezoneConverter: support "local time" variations.
Merge pull request #706 from mwmiller/my_time_to_shine

TimezoneConverter: add "my time" support.