As commented in the code the Poco & Windows APIs are not reliable enough
to check for write permissions on a directory.
Refs #8080

Russell Taylor authored 11 years ago and Zhou, Wenduo committed 11 years ago

Previously, even if the user had chosen something else it would revert
to scan_index if the dataset was being filtered.

Russell Taylor authored 11 years ago and Zhou, Wenduo committed 11 years ago

Garrett says that this is the one he would use most often.

NOT Re #6806 - I just happened to spot it when I was working on that ticket.

This replaces having to give an absolute time in UTC (though that's still
the format used by the underlying algorithm).
This is more user-friendly and compact, though I'd expect this to be an
extremely rarely-used option in any case.