* gegl/gegl-config.c: (gegl_config_init): changed tile size to 64x128
* gegl/operation/gegl-operation-point-filter.c: 
(gegl_operation_point_filter_class_init): do not cache results of
point filters.
* gegl/property-types/gegl-path.c: (gegl_param_vector_init),
(gegl_path_stroke): clear only the region bein rerendered.
* operations/external/fill.c: (gegl_chant_class_init): do not cache
fills, as they are cheap to redo.

svn path=/trunk/; revision=2713