This patch fixes a nasty little bug that shows up when #xmlschema is
called on a Date/DateTime that's out of range of the Time class
(~1902-2038) -- you either get this exception:
SystemStackError: stack level too deep
or a fatal error, which brings down Mongrel or script/console, with
this message:
Illegal instruction
The fix is simple -- I've added a DateTime#xmlschema method, so that
Date#xmlschema doesn't get stuck in an endless loop of trying to
convert a Date to a Time.
