Socket.pmc should implement readline

[coke]

The following code

.sub main
  $P1 = new 'Socket'
  # connect to a port.
  $S1 = readline $P1
.end

dies with

Method 'readline' not found
current instr.: 'main' pc -1 ((unknown file):-1)
called from Sub 'main' pc 3 (foo.pir:4)

I imagine I'm not the only HLL author who needs line-based reads on arbitrary handles. Is this something parrot should provide or do I need to roll my own?

(also, if readline is just a shortcut to call the readline method, let's kill the opcode.)

[whiteknight]

Socket PMC does implement readline method now.