Package should be split (maybe into a -common and a -gui packages)

[perlhead]

subdownloader woks both as a command-line tool and a GUI app. Trying to install it in a small headless server implies installing a large part of the X libraries, fonts, etc.

This could be solved by splitting the package in two: subdownloader-common would install the command-line tool, while subdownloader-gui would install the GUI code, and depend on the dowloader-common plus the X stuff.