8l: add DOS stub to PE binaries
8l: add DOS stub to PE binaries

R=rsc
CC=golang-dev
http://codereview.appspot.com/915041

Committer: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>

tav/go,tav/go,tav/go,tav/go,tav/go,tav/go,tav/go