* gcc-interface/ada-tree.h (TYPE_VAX_FLOATING_POINT_P): Move around.
	(TYPE_UNCONSTRAINED_ARRAY): Adjust comment.
	* gcc-interface/trans.c (Attribute_to_gnu) <Attr_Pool_Address>: Tidy
	up.  Add comment and use canonical predicate for thin pointers.
	(gnat_to_gnu) <N_Free_Statement>: Tidy up and reorder.  Add comment
	and use canonical predicate for thin pointers.
	* gcc-interface/utils.c (convert_to_fat_pointer): Remove superfluous
	'else' and use standard name.
	(convert_to_thin_pointer): Delete.
	(convert) <POINTER_TYPE>: Do the difference in sizetype directly and
	change obsolete idioms.  Do not call above function.
	(unchecked_convert): Fix formatting.
	* gcc-interface/utils2.c (build_unary_op) <INDIRECT_REF>: In the thin
	pointer case, use byte_position to get the field position.

From-SVN: r185132