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

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