bitmap.c (bitmap_elt_insert_after, [...]): Use checking asserts.

	* bitmap.c (bitmap_elt_insert_after, bitmap_first_set_bit,
	bitmap_first_set_bit, bitmap_last_set_bit, bitmap_last_set_bit,
	bitmap_and_into, bitmap_and_compl_into, bitmap_set_range,
	bitmap_compl_and_into, bitmap_elt_ior): Use checking asserts.

From-SVN: r160516