Fixes #236.
R=r
CC=golang-dev
https://golang.org/cl/155072
// number of bytes between the start of the struct and the start of the field.
func Offsetof(v ArbitraryType) int
-// Alignof returns the alignment of the value v. It is the minimum value m such
+// Alignof returns the alignment of the value v. It is the maximum value m such
// that the address of a variable with the type of v will always always be zero mod m.
// If v is of the form obj.f, it returns the alignment of field f within struct object obj.
func Alignof(v ArbitraryType) int