The New Message Window

I have finished a protype of the new grig message window, which is part of the grig debug handler. The idea is to trap debug messages from hamlib and show them in a nice GtkListView and maybe also a GtkTreeView.

To begin with I only implemented the list view and it works all right. The only problem is performance when receiveing a lots of message, eg. when the debug level is set to RIG_DEBUG_VERBOSE or RIG_DEBUG_TRACE. I must admit that I am not particularly surprised about this issue and, in any case, I must look into it and see what I can do about it.