unsafe: Alignof and Offsetof now use the same style
unsafe: Alignof and Offsetof now use the same style

The easy part of issue 2968.

R=golang-dev, gri
CC=golang-dev
http://codereview.appspot.com/5655059

pombredanne/go-deleteme,tv42/old-go,pombredanne/go-deleteme,tv42/old-go,dsriram/golang,tv42/old-go,gnanderson/go,tv42/old-go,apparentlymart/golang,dsriram/golang,dsriram/golang,gnanderson/go,apparentlymart/golang,tv42/old-go,apparentlymart/golang,pombredanne/go-deleteme,dsriram/golang,pombredanne/go-deleteme,gnanderson/go,gnanderson/go,apparentlymart/golang,apparentlymart/golang,dsriram/golang,dsriram/golang,gnanderson/go,tv42/old-go,pombredanne/go-deleteme,apparentlymart/golang,pombredanne/go-deleteme,apparentlymart/golang,dsriram/golang,gnanderson/go,tv42/old-go,gnanderson/go,pombredanne/go-deleteme