* 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.