Don't advance to dayOfWeek if it is 0

If 24:00 is used with a specific day, it will advance to next Monday, since advance is set to true and dayOfWeek is updated to 1.

To fix #173:
1, don't set advance to true if dayOfWeek is 0.
2, don't update dayOfWeek if it is 0.
Add time zone database version to manifest

Fixed #176: Make the Olson DB version known.
Merge branch 'master' of github.com:longhua/joda-time