Lots of reorg (incomplete)

1) Move chart size_allocator into GogView
2) First pass at a GogLabel object
3) reorg the data allocator to use an interface rather than a series
   so that labels can use them too

2003-06-12  Jody Goldberg <jody@gnome.org>

	* graph/goffice-graph.h : remove POSITION_FILL
	  It does no good to have random thought experiments floating around.

2003-06-12  Jody Goldberg <jody@gnome.org>

	* graph/gog-guru.c (graph_guru_type_selector_new) : add an accelerator
	  for the plot family selector.