netchan: add a cross-connect test. Suggested in a bug report (since addressed) by Axel Schreiner.
netchan: add a cross-connect test.
Suggested in a bug report (since addressed) by Axel Schreiner.

R=rsc
CC=golang-dev
http://codereview.appspot.com/2228041
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go