decl.c (gnat_to_gnu_entity): If the type has strict alignment...

decl.c (gnat_to_gnu_entity): If the type has strict alignment...

	* decl.c (gnat_to_gnu_entity) <E_Record_Type>: If the type has
	strict alignment, no alignment clause and a known static size, cap
	the type alignment to the greatest power of 2 factor of the size.
	(gnat_to_gnu_field): If the field has a component clause, is aliased
	or of a type with strict alignment, require that its size be equal to
	that of the type.
	(validate_size): Use the type size as the minimum size for a type with
	strict alignment.

From-SVN: r130406