misc/bash: add *.go completion for gofmt
misc/bash: add *.go completion for gofmt

R=golang-dev, rsc1, rsc
CC=golang-dev
http://codereview.appspot.com/2039044

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

pombredanne/go-deleteme,apparentlymart/golang,gnanderson/go,h8liu/golang,h8liu/golang,ssrl/go,tv42/old-go,dsriram/golang,pombredanne/go-deleteme,tv42/old-go,tv42/old-go,tv42/old-go,apparentlymart/golang,h8liu/golang,pombredanne/go-deleteme,apparentlymart/golang,ssrl/go,ssrl/go,dsriram/golang,gnanderson/go,apparentlymart/golang,dsriram/golang,h8liu/golang,gnanderson/go,pombredanne/go-deleteme,tv42/old-go,dsriram/golang,apparentlymart/golang,gnanderson/go,h8liu/golang,pombredanne/go-deleteme,ssrl/go,dsriram/golang,pombredanne/go-deleteme,gnanderson/go,ssrl/go,pombredanne/go-deleteme,ssrl/go,tv42/old-go,gnanderson/go,dsriram/golang,apparentlymart/golang,tv42/old-go,apparentlymart/golang,ssrl/go,gnanderson/go,h8liu/golang,h8liu/golang,dsriram/golang