Log Message:
Update mldonkey* to 2.8.1:

2006/09/17 version 2.8.1 = tag release-2-8-1
5401: Fix question whether to compile Ocaml with some bash versions (pango)
5400: Allow use of Ocaml 3.09.3, keep 3.09.2 as default
5399: EDK, Telnet: Fix and clarify message when starting a search (schlotter)

2006/09/16
5397: EDK: Disable broken option emulate_sparsefiles
5395: Improve max_hard_up/download_rate computation code (pango)
5380: BT: Add file_num to certain log entries (jave)
5392: fix typos in help texts (schlotter)
5394: Fix max_hard_up/download_rate computation
- crashed on Windows when max_hard_upload_rate = 0
- when max_hard_upload_rate = 0 max_hard_download_rate was badly computed