Stephen Evanchik's GNCDateEdit GObject patch.

[Derek Atkins]

Log Message:
-----------
Stephen Evanchik's GNCDateEdit GObject patch.

        * src/gnome-utils/gnc-date-edit.h:
          Removed #include <gnome.h>
          Added #include <glib.h>
          Added private member 'disposed' to GNCDateEdit struct
        * src/gnome-utils/gnc-date-edit.c:
          Converted the following functions to use GObject:
                gnc_date_edit_get_type,
                gnc_date_edit_class_init
          Renamed gnc_date_edit_destroy to gnc_date_edit_finalize
          Added gnc_date_edit_dispose function that handles 
          child widget destruction
          Explicit casts to GTK_WIDGET in create_children

Tags:
----
gnucash-gnome2-dev

Modified Files:
--------------
    gnucash:
        ChangeLog
    gnucash/src/gnome-utils:
        gnc-date-edit.c
        gnc-date-edit.h