go/printer (gofmt): remove more residue from semicolon transition minor unrelated cleanups
go/printer (gofmt): remove more residue from semicolon transition
minor unrelated cleanups

R=rsc
CC=golang-dev
http://codereview.appspot.com/217086

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