elementary/datetime - Elm_datetime open source patch : Datetime enhancements

elementary/datetime - Elm_datetime open source patch : Datetime enhancements

Change Description:
- Year min/max values are moved to elm_config.
- Format specifier must come along with % followed by any separator. ( % 123d is not supported but %d will denote Date format specifier)
- Field separator can constitute multiple spaces, Space followed by any other non format specifier is also treated as the separator till its max length. ( %d x/ %b #2 format displays 27 x/ Mar #2 )

Thanks, Sumanth

Submitted-By-Off Sumanth Krishna Mannam<sumanth.m@samsung.com>

git-svn-id: svn+ssh://svn.enlightenment.org/var/svn/e/trunk/elementary@69846 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33