Fixes Issue #1271.
DateTimeFormat.parse method now uses 00:00:00 (as opposed to the current time)
 to fill in any missing parts when parsing a partial date string.

Found by: calinm
Patch by: jlabanca
Review by: knorton



git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@1281 8db76d5a-ed1c-0410-87a9-c151d255dfc7