doc/go_mem: init-created goroutine behavior changes for Go 1         They can start execution even before all init functions end.
doc/go_mem: init-created goroutine behavior changes for Go 1
        They can start execution even before all init functions end.

R=rsc, r, adg
CC=golang-dev
http://codereview.appspot.com/5732061
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go