Only download complete files

Pawcio implementation: What this does if you are trying to download a file and the file does not have any complete sources, useing this will not let the file start downloading untill there is a complete source for it. Also if you Right Click in the transfer window and from the menu choose [ Force Download ] from the menu this just bypass the stopped incomplete file and try to start the download.

eastshare implementation:

• if a file was not seen complete, no data is downloaded and no bandwidth is wasted.
• while waiting for the file to show up complete, sources are asked every (FILEREASKTIME*2).
• the download can be manually started in the file-context menu. (last seen will be 07-07-2002,

that's emule birthday. change tick count to 946681200 for sat, 01-01-2000)

• if a file is stopped and restarted, this waiting state will be restored.