[9fans] pass list from Rc to awk (p9p vs plan9)

[dexen deVries]

mental note, as it took me a second to put it together:

#!/usr/bin/env rc

flag e +

myList = ( aa bb cc)

awk '
BEGIN {
split(ENVIRON["myList"], myList, "\001") # "\000" on plan9 proper
for (n in myList)
print n, myList[n]
}
'