go.tools/cmd/cover: s/ParseInt/Atoi/ So people stop asking me to do this.
go.tools/cmd/cover: s/ParseInt/Atoi/
So people stop asking me to do this.

R=golang-dev, rsc
CC=golang-dev
https://codereview.appspot.com/12691044

tmc/mirror-go.tools,tmc/mirror-go.tools,tmc/mirror-go.tools,t-yuki/go.tools.old,t-yuki/go.tools.old,t-yuki/go.tools.old