#3 Config init not robust.

[uiltje]

Creation of the 'Config' class is not robust.
When the config file is not present/accessible, the object is left with null-values, leading to NullPointerExceptions in the program.

Attached, a patch that at least initialises the values to some sensible default in that case.

Please review and apply.

[uiltje]

Sorry, attached patch was wrong. Replacing it with the proper patch (hopefully :).

This one, additionally, lets you choose between multiple interfaces (when appropriate).

Hope this helps..

[uiltje]