run.bash: enlarge timeout of runtime tests Recently addition to runtime test makes it take very close to 720s of timeout limit on the netbsd-arm-qemu builder.
run.bash: enlarge timeout of runtime tests
Recently addition to runtime test makes it take very close to 720s
of timeout limit on the netbsd-arm-qemu builder.

R=golang-dev, go.peter.90, rsc
CC=golang-dev
https://codereview.appspot.com/10935043

wesolows/golang-old,wesolows/golang-old,firebitsbr/golang-old,wesolows/golang,wesolows/golang-old,wesolows/golang-old,wesolows/golang,firebitsbr/golang-old,firebitsbr/golang-old,wesolows/golang-old,firebitsbr/golang-old,firebitsbr/golang-old,wesolows/golang-old,wesolows/golang,wesolows/golang,wesolows/golang,firebitsbr/golang-old,firebitsbr/golang-old,wesolows/golang,wesolows/golang,firebitsbr/golang-old,wesolows/golang-old