cmd/dist: Unix grammar fix
cmd/dist: Unix grammar fix

Fixes issue 3165.

R=golang-dev, iant
CC=golang-dev
http://codereview.appspot.com/5712051

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