Warning fixes:

Warning fixes:

	* actions.c (chill_handle_multi_case_label): Always return a value
	in function returning non-void.
	* except.c: Include OS headers before any local ones.
	* typeck.c (layout_chill_range_type): Change type of variable
	`negprecision' to int.
	(apply_chill_array_layout): Initialize variables `stepsize' and
	`start_bit'.
	(layout_chill_struct_type): Change type of variable `min_align' to
	unsigned int.
	(smash_dummy_type): Change name of variable `main' to `main_tree'.

From-SVN: r22680