GDL: Drop placement patches
GDL: Rebase on upstream commit 2648F (2010-10-26)
GDL: Rebase on upstream commit 871CA (2010-06-26)
Merge upstream GDL: GNOME_2_30_0
Fixed missing initializers, mismatching function with too many parameters, and misc warnings.
Rm a few instances of deprecated GtkNotebookPage. gtkmm-2.4 still uses it
Dockable dialogs patch applied (https://sourceforge.net/tracker/?func=detail&atid=604308&aid=1688508&group_id=93438)