Made GArray behave correct. Now zero_terminated really means, that the

Made GArray behave correct. Now zero_terminated really means, that the

2000-03-24  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* garray.c: Made GArray behave correct. Now zero_terminated really
	means, that the element array->data[array->len] exists and is
	zeroed, and clear means that any unassigned elements obtained
	through g_array_set_size (the only way to get unassigned elements
	AFAICT) are zeroed. Added some macors to mak the code more
	obvoius. Also made GPtrArray zero elements after
	g_ptr_array_set_size. This is done in a portbale way (assignment
	of NULL instead of just memsetting it to zero), though that might
	be more portability than we actually want.