#50 Created separate dl directory for each search

[Jonathan Melhuish]

Sometimes I find it difficult to work out how some
files have got it to my download directory, especially
if I have several similar searches or am using Auto-Get.

It would be REALLY useful to have an option to
automatically create a subdirectory within the download
directory for each search, and for it to save the
corresponding successful downloads into this folder.

Cheers,

Jon