gnocl::label new option -resizable

If the label widget is used for well, labelling other widgets, the overall size of the label is pretty-well fixed and then only to a few number of words. But, the Gtk+ label is much more powerful than this. Because the widget is a container for pango text, its a really useful, high-speed alternative to the gnocl::text widget for the display of extensive pieces of text. Added to this, the use of pango markup, which is pretty well the same as a standard html string, makes run time formatting a something of a breeze.