I'm testing out the current SMW 1.4 code in SVN; so far everything seems to
be working fine, except for a problem with date parsing. The system now
rejects dates of the form "January 1, 2008"; though it accepts "January 1
2008", without the comma. The former, though, is much more common in the
American date format, and in fact it's what Semantic Forms' date input
produces, when the wiki has $wgAmericanDates set to true. Can this be fixed?