misc/emacs: make compilation-mode's next-error understand test failure output.
misc/emacs: make compilation-mode's next-error understand test failure output.

specifically, adds a go-test element to compilation-error-regexp-alist[-alist].
Fixes issue 3629.

R=golang-dev, rsc, sameer
CC=golang-dev, jba
http://codereview.appspot.com/6197091

Committer: Sameer Ajmani <da4a4efb907a17fabb3e092841511e7f24e226cf@golang.org>

h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang