New MLDonkey release 2.8.3

This release brings some new stuff to the EDK module, it can up-/download files > 4GB and supports compressed upload. Also a major EDK upload bug was fixed where eMules rotating block requests were wrongly interpreted, this led to sending nearly all blocks twice. MLDonkey now optionally supports uploading full chunks (9.728.000 byte) to improve spreading of files. Some bugfixes for the multiuser support have been added, this feature can now be assumed stable. On top of this the usual logging updates and some command parameter extensions have been added. For details check-out the Changelog.