[ansel] Patch for date searching

[Chuck Hagenbuch]

Quoting "Heath S. Hendrickson" <heath at outerspaceconsultants.com>:

> This necessitated a patch to only search.php (attached), but it is
> predicated on the patch to lib/Exif.php that I sent out earlier.  This
> patch includes the earlier patches to search.php, so if that one hasn't
> been applied it can be safely skipped in favor of this one.

Please resubmit this without the old diffs, so that it's just these changes
against current (as of tonight) CVS, and also with an eye to the style stuff I
mentioned.

> Also attached is a CLI script that will convert all EXIF date fields to
> timestamp format in the datatree.

Committed, thanks.

-chuck

--
"Regard my poor demoralized mule!" - Juan Valdez