2003-10-26  Sven Neumann  <sven@gimp.org>

	* app/config/gimpconfig-deserialize.c
	(gimp_config_deserialize_fundamental): handle negative float and
	double values similar to how this is done for integers and the
	like.

	* app/config/gimpconfig-params.h: added two new param flags and
	documented all flags in the header file (for now).

	* app/config/gimpconfig-serialize.h: handle the new param flags
	GIMP_PARAM_DEFAULTS and GIMP_PARAM_IGNORE.

	* app/text/text-enums.[ch]
	* app/text/gimptext.[ch]: added some properties that we will need
	sooner or later. Mark the new properties and a lot of the existing
	ones as GIMP_PARAM_DEFAULTS so that their values are not
	serialized unless changed from the default value.

	* app/text/gimptextlayout.c
	* app/tools/gimptextoptions.c: made all length properties in
	GimpText depend on a single unit.