external commands added. runcmd and copyfile
external commands added. runcmd and copyfile

PaddySchmidt/gosl,PaddySchmidt/gosl,PaddySchmidt/gosl,cpmech/gosl,PaddySchmidt/gosl,cpmech/gosl,cpmech/gosl,cpmech/gosl,PaddySchmidt/gosl,PaddySchmidt/gosl,cpmech/gosl