The gc compiler only gives an error about an unused label if
it has not given any errors in an earlier pass. Remove all
unused labels in this test because they don't test anything
useful and they cause gccgo to give unexpected errors.
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/12580044
The gc compiler only gives an error about fallthrough in a
type switch if it has not given any errors in an earlier pass.
Remove all functions in this test that use fallthrough in a
type switch because they don't test anything useful and they
cause gccgo to give unexpected errors.
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/12614043
