vet: add a progress message to asmdecl.go Analogous to the one for .go files, it's for .s only and is protected by the verbose flag.
vet: add a progress message to asmdecl.go
Analogous to the one for .go files, it's for .s only and is protected
by the verbose flag.

R=golang-dev, bradfitz
CC=golang-dev
https://codereview.appspot.com/8030046
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go