compile without warning with a recent pango by not redefining PANGO_TYPE_ITEM and PANGO_TYPE_LAYOUT_LINE if they are already defined
compile without warning with a recent pango by not redefining PANGO_TYPE_ITEM and PANGO_TYPE_LAYOUT_LINE if they are already defined


benolee/ruby-gnome2,benolee/ruby-gnome2,benolee/ruby-gnome2