cmd/dist: xprintf() can't output whole of 'dist env'.
cmd/dist: xprintf() can't output whole of 'dist env'.

R=golang-dev, mpimenov, alex.brainman
CC=golang-dev
http://codereview.appspot.com/5667045

Committer: Alex Brainman <54ba58c8441b5eff861de6b4e5ee46baf086b142@gmail.com>

tav/go,tav/go,tav/go,tav/go,tav/go,tav/go,tav/go