[9fans] wait hang

[erik quanstrom]

the kernel fix does indeed keep
        ; for(i in `{seq 1 $n}){>/dev/null echo fu&}
        ; for(i in `{seq 1 $n}){>/dev/null echo fu&}
from hanging.

however, i think the fix to rc might be in error.  if i do this

        #!/bin/rc
        cmd1&
        cmd2&
        wait

shouldn't that wait for both processes?  for example, on an older
rc, from this script

        #/bin/rc
        date
        sleep 15 &
        sleep 30 &
        wait
        date

i get

        Mon Dec 18 10:57:43 EST 2006
        Mon Dec 18 10:58:13 EST 2006

whereas with the rc from friday, i get

        ; 8.out
        broken! date ; sleep 15 & sleep 30 & wait ; date
        Mon Dec 18 11:00:33 EST 2006
        Mon Dec 18 11:00:33 EST 2006

- erik