[Dctc-announce] Release of DCTC v0.85.6

[eric]

Changelog:

- hublist and DCTC now support proxy requiring authentification.

- Some commands and variables were removed: /LINK, /NOLINK, /DLFORCE, 
/NODLFORCE, /HIDE_ABS, /SHOW_ABS.

- dctc_link is now always enabled.

- Download force is removed.

- Absolute paths are now shown in the share list, they are modified in 
relative path (like /SHOW_ABS does).

- improve decoding of buggy user info message ($MyINFO).

- fix incorrect counting of upload slots if share list upload is always 
allowed.

- fix incorrect command sequence occuring if a GDL or an auto-scan starts 
during the hub connection establishment. Some hubs ignore the command, others 
complain and close the connection.